21131831 (number)

21131831 is an odd 8-digits composite number following 21131830 and preceding 21131832. In scientific notation, it is written as 2.1131831 × 10^7. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 18091008 positive integers (up to 21131831) that are relatively prime to 21131831.

Interesting facts

Basic properties

Name

Name twenty-one million one hundred thirty-one thousand eight hundred thirty-one

Notation

Scientific notation 2.1131831 × 10^7
Engineering notation 2.1131831 × 10^6

Prime Factorization of 21131831

Prime Factorization 7 × 1249 × 2417

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21131831
Product of the distinct prime numbers

The prime factorization of 21131831 is 7 × 1249 × 2417. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 3, 23, 24, 607, 650, 3935, 5104, 22574, 90837, 456989, 839809, 3000046, 6138609, 23964971, 86892541, 819267851, 362629881, 4315716318, 1312816458

Basic calculations (n = 21131831)

Multiplication

n×y
n×2 42263662
n×3 63395493
n×4 84527324
n×5 105659155

Division

n÷y
n÷2 10565915.5
n÷3 7043943.6666667
n÷3 5282957.75
n÷5 4226366.2

Exponentiation

ny
n2 446554281412561
n3 9.4365096071367E+21
n4 1.9941072624789E+29
n5 4.2139137666576E+36

Nth Root

y√n
2√n 4596.9371324829
3√n 276.46853397048
4√n 67.800716312462
5√n 29.173425462029

Divisors of 21131831

1, 7, 1249, 2417, 8743, 16919, 3018833, 21131831

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 -21131830
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 21131831 can be divided by 8 positive divisors. The sum of these divisors (counting 21131831) is 1, the average is 0.125.

Base conversion 21131831

Base System Value
2 Binary 1010000100111001000110111
3 Ternary 1110202121102102
4 Quaternary 1100213020313
5 Quinary 20402204311
6 Senary 2032532315
8 Octal 120471067
10 Decimal 21131831
12 Duodecimal 70b109b
16 Hexadecimal 1427237
20 Vigesimal 6c19bb
36 Base36 ckxfb

Cryptographic Hash Functions

md5 b5f4ac6b7dd32eb51cd0a6051f782ab9
sha1 904b6586e998f165bdee097d2b1be5e9ebd723c9
sha256 5ad2353c2cccafe43e6faa5aeaa007bd24f9fd482c10126367d16cf2555b8b4e
sha512 e37fa915c75da8da670b46336545b427c08dffe64d6a55f038c448c94cba0fdaf38380df86608601d40be8378016807a09d33c5c64d8c5984a68babd27aa459f
ripemd-160 ac8f825d80c8acf0bbdfb517da6f624a3573e110

21131831 as geometric shapes

Circle

Radius = n
Diameter 42263662
Circumference 132775210.053
Area 1.4028916499148E+15

Sphere

Radius = n
Volume 3.9527559009747E+22
Surface area 5.6115665996591E+15
Circumference 132775210.053

Square

Length = n
Perimeter 84527324
Area 446554281412561
Diagonal 29884921.997976

Cube

Length = n
Surface area 2679325688475366
Volume 9.4365096071367E+21
Space diagonal 36601404.948959

Equilateral Triangle

Length = n
Perimeter 63395493
Area 1.9336367593599E+14
Altitude 18300702.47448

Triangular Pyramid

Length = n
Surface area 1.9336367593599E+14
Volume 1.1121033223231E+21
Height 9961640.6659921