21131391 (number)

21131391 is an odd 8-digits composite number following 21131390 and preceding 21131392. In scientific notation, it is written as 2.1131391 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 12 positive divisors. There are 13258368 positive integers (up to 21131391) that are relatively prime to 21131391.

Interesting facts

Basic properties

Name

Name twenty-one million one hundred thirty-one thousand three hundred ninety-one

Notation

Scientific notation 2.1131391 × 10^7
Engineering notation 2.1131391 × 10^6

Prime Factorization of 21131391

Prime Factorization 3 × 17 × 17 × 24373

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 1243023
Product of the distinct prime numbers

The prime factorization of 21131391 is 3 × 17 × 17 × 24373. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 1, 9, 63, 734, 407, 1769, 1703, 29589, 30498, 946507, 473599, 9577204, 9695417, 47167005, 2115170, 687977937, 239699367, 2498339842, 5666005479

Basic calculations (n = 21131391)

Multiplication

n×y
n×2 42262782
n×3 63394173
n×4 84525564
n×5 105656955

Division

n÷y
n÷2 10565695.5
n÷3 7043797
n÷3 5282847.75
n÷5 4226278.2

Exponentiation

ny
n2 446535685594881
n3 9.4359201677585E+21
n4 1.9939411850969E+29
n5 4.2134750813286E+36

Nth Root

y√n
2√n 4596.889274281
3√n 276.46661511169
4√n 67.80036337868
5√n 29.173303973132

Divisors of 21131391

1, 3, 17, 51, 289, 867, 24373, 73119, 414341, 1243023, 7043797, 21131391

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21131390
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21131391 can be divided by 12 positive divisors. The sum of these divisors (counting 21131391) is 1, the average is 0.083333333333333.

Base conversion 21131391

Base System Value
2 Binary 1010000100111000001111111
3 Ternary 1110202120211010
4 Quaternary 1100213001333
5 Quinary 20402201031
6 Senary 2032530303
8 Octal 120470177
10 Decimal 21131391
12 Duodecimal 70b0993
16 Hexadecimal 142707f
20 Vigesimal 6c189b
36 Base36 ckx33

Cryptographic Hash Functions

md5 a284fb2c34eac21726390d7cf219cc6e
sha1 3f7a203df6c7bf69441b7a85ceae25842cf10762
sha256 8cdefd46e7945bba6291ce2a00d8dd89edeef4ac661c45bcbf457581741dcd51
sha512 9b79ba054fbbb09ecc098d5cd23e3af28854922efd570e3988bc5a9b7504a94d7e95398436d2dd6e26f536fc69167796dba1ea639b6f7fea0637895ccd5f16a0
ripemd-160 036137948e324fd045761857f4792d46dbeeeba4

21131391 as geometric shapes

Circle

Radius = n
Diameter 42262782
Circumference 132772445.45147
Area 1.4028332294306E+15

Sphere

Radius = n
Volume 3.9525089971853E+22
Surface area 5.6113329177222E+15
Circumference 132772445.45147

Square

Length = n
Perimeter 84525564
Area 446535685594881
Diagonal 29884299.744009

Cube

Length = n
Surface area 2679214113569286
Volume 9.4359201677585E+21
Space diagonal 36600642.846604

Equilateral Triangle

Length = n
Perimeter 63394173
Area 1.9335562371073E+14
Altitude 18300321.423302

Triangular Pyramid

Length = n
Surface area 1.9335562371073E+14
Volume 1.1120338562262E+21
Height 9961433.2480029