31397985 (number)

31397985 is an odd 8-digits composite number following 31397984 and preceding 31397986. In scientific notation, it is written as 3.1397985 × 10^7. The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors. There are 16745568 positive integers (up to 31397985) that are relatively prime to 31397985.

Interesting facts

Basic properties

Name

Name thirty-one million three hundred ninety-seven thousand nine hundred eighty-five

Notation

Scientific notation 3.1397985 × 10^7
Engineering notation 3.1397985 × 10^6

Prime Factorization of 31397985

Prime Factorization 9 × 5 × 697733

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 31397985
Product of the distinct prime numbers

The prime factorization of 31397985 is 9 × 5 × 697733. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 31397985)

Multiplication

n×y
n×2 62795970
n×3 94193955
n×4 125591940
n×5 156989925

Division

n÷y
n÷2 15698992.5
n÷3 10465995
n÷3 7849496.25
n÷5 6279597

Exponentiation

ny
n2 985833462060225
n3 3.0953184254265E+22
n4 9.7186761491765E+29
n5 3.051468479517E+37

Nth Root

y√n
2√n 5603.3904914792
3√n 315.47667814512
4√n 74.855797981714
5√n 31.577689898277

Divisors of 31397985

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -31397984
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 31397985 can be divided by 8 positive divisors. The sum of these divisors (counting 31397985) is 1, the average is 0.125.

Base conversion 31397985

Base System Value
2 Binary 1110111110001100001100001
3 Ternary 2012002011221100
4 Quaternary 1313301201201
5 Quinary 31014213420
6 Senary 3040545013
8 Octal 167614141
10 Decimal 31397985
12 Duodecimal a622169
16 Hexadecimal 1df1861
20 Vigesimal 9g4ej5
36 Base36 ioyu9

Cryptographic Hash Functions

md5 57376c9dc1d76e0b2350a865a6675c29
sha1 e2a7e9c7c45d7bc9c6bdeb12adb700ccdfc9f47a
sha256 eca6905131ccb7039180db618ab2f30f77369189a7528ec57177ca2ea78cda9c
sha512 4dae2b0b8dd74526d1904c3952837003662f39dd51672ede3dae8585b5a9c6d6c0dbcb0c05043070f1941f9413b2c1e08e606376eb4cf281f138a7a4ece41738
ripemd-160 9dde9bc9f419b8d7ec460261e34799be7849b2b6

31397985 as geometric shapes

Circle

Radius = n
Diameter 62795970
Circumference 197279358.02705
Area 3.0970871620714E+15

Sphere

Radius = n
Volume 1.2965639501121E+23
Surface area 1.2388348648286E+16
Circumference 197279358.02705

Square

Length = n
Perimeter 125591940
Area 985833462060225
Diagonal 44403456.218187

Cube

Length = n
Surface area 5915000772361350
Volume 3.0953184254265E+22
Space diagonal 54382905.275285

Equilateral Triangle

Length = n
Perimeter 94193955
Area 4.2687841102246E+14
Altitude 27191452.637643

Triangular Pyramid

Length = n
Surface area 4.2687841102246E+14
Volume 3.6478677475846E+21
Height 14801152.072729