31390 (number)
31,390 (thirtyone thousand three hundred ninety) is an even fivedigits composite number following 31389 and preceding 31391. In scientific notation, it is written as 3.139 × 10^{4}. The sum of its digits is 16. It has a total of 4 prime factors and 16 positive divisors. There are 12,096 positive integers (up to 31390) that are relatively prime to 31390.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 5
 Sum of Digits 16
 Digital Root 7
Name
Short name  31 thousand 390 

Full name  thirtyone thousand three hundred ninety 
Notation
Scientific notation  3.139 × 10^{4} 

Engineering notation  31.39 × 10^{3} 
Prime Factorization of 31390
Prime Factorization 2 × 5 × 43 × 73
Composite numberω(n)  Distinct Factors  4  Total number of distinct prime factors 

Ω(n)  Total Factors  4  Total number of prime factors 
rad(n)  Radical  31390  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 31,390 is 2 × 5 × 43 × 73. Since it has a total of 4 prime factors, 31,390 is a composite number.
Divisors of 31390
16 divisors
τ(n)  Total Divisors  16  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  58608  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  27218  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  3663  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  177.17223258739  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  8.5694785694786  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 31,390 can be divided by 16 positive divisors (out of which 8 are even, and 8 are odd). The sum of these divisors (counting 31,390) is 58,608, the average is 3,663.
Other Arithmetic Functions (n = 31390)
φ(n)  Euler Totient  12096  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  504  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 3383  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 12,096 positive integers (less than 31,390) that are coprime with 31,390. And there are approximately 3,383 prime numbers less than or equal to 31,390.
Divisibility of 31390
m  2  3  4  5  6  7  8  9 

n mod m  0  1  2  0  4  2  6  7 
The number 31,390 is divisible by 2 and 5.
Classification of 31390
By Arithmetic functions
 Arithmetic
 Deficient
Expressible via specific sums
 Polite
By Powers
 Square Free
Base conversion (31390)
Base  System  Value 

2  Binary  111101010011110 
3  Ternary  1121001121 
4  Quaternary  13222132 
5  Quinary  2001030 
6  Senary  401154 
8  Octal  75236 
10  Decimal  31390 
12  Duodecimal  161ba 
16  Hexadecimal  7a9e 
20  Vigesimal  3i9a 
36  Base36  o7y 
Basic calculations (n = 31390)
Multiplication
n×yn×2  62780 

n×3  94170 
n×4  125560 
n×5  156950 
Division
n÷yn÷2  15695.000 

n÷3  10463.333 
n÷4  7847.500 
n÷5  6278.000 
Exponentiation
n^{y}n^{2}  985332100 

n^{3}  30929574619000 
n^{4}  970879347290410000 
n^{5}  30475902711445969900000 
Nth Root
^{y}√n^{2}√n  177.17223258739 

^{3}√n  31.544993232207 
^{4}√n  13.310606018788 
^{5}√n  7.9315535941263 
31390 as geometric shapes
Circle
Radius = nDiameter  62780 

Circumference  197229.18679237 
Area  3095512086.7062 
Sphere
Radius = nVolume  1.2955749920228E+14 

Surface area  12382048346.825 
Circumference  197229.18679237 
Square
Length = nPerimeter  125560 

Area  985332100 
Diagonal  44392.163722891 
Cube
Length = nSurface area  5911992600 

Volume  30929574619000 
Space diagonal  54369.074849587 
Equilateral Triangle
Length = nPerimeter  94170 

Area  426661314.88213 
Altitude  27184.537424794 
Triangular Pyramid
Length = nSurface area  1706645259.5285 

Volume  3645085325385 
Height  25629.827675321 
Cryptographic Hash Functions
md5  452dee7ed3aac40e980602f275eec5e5 

sha1  2277a775567b16453e527e36a822a626b33adb3c 
sha256  55eaa72f053b10442860ff79ee929da94dee37a53a38e86484f1222a28ff2898 
sha512  7f4b9d491a074d0893d6b38bd3028a06205eee7247618d6915edde8a61a850c3cb174ec382147a3f04fade7e383397bf7c4fca658a4fed74cdb0e3ffc9b8c04f 
ripemd160  0620e3dc3e866aaad527195a74a8c5244b40e077 