20131981 (number)

20131981 is an odd 8-digits prime number following 20131980 and preceding 20131982. In scientific notation, it is written as 2.0131981 × 10^7. The sum of its digits is 25. It has a total of 1 prime factors and 2 positive divisors. There are 20131980 positive integers (up to 20131981) that are relatively prime to 20131981.

Interesting facts

Basic properties

Name

Name twenty million one hundred thirty-one thousand nine hundred eighty-one

Notation

Scientific notation 2.0131981 × 10^7
Engineering notation 2.0131981 × 10^6

Prime Factorization of 20131981

Prime Factorization 20131981

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 20131981
Product of the distinct prime numbers

The prime factorization of 20131981 is 20131981. Since it has a total of 1 prime factors.

Most popular turbo-numbers

1, 4, 40, 67, 518, 578, 6176, 3719, 11978, 27990, 446432, 470920, 5083112, 8859265, 48060389, 97457762, 331247399, 395702740, 3890175046, 8902924624

Basic calculations (n = 20131981)

Multiplication

n×y
n×2 40263962
n×3 60395943
n×4 80527924
n×5 100659905

Division

n÷y
n÷2 10065990.5
n÷3 6710660.3333333
n÷3 5032995.25
n÷5 4026396.2

Exponentiation

ny
n2 405296658984361
n3 8.1594246380366E+21
n4 1.6426538178389E+29
n5 3.3069875450309E+36

Nth Root

y√n
2√n 4486.8676156089
3√n 272.03753897266
4√n 66.984084793396
5√n 28.891979788111

Divisors of 20131981

1, 20131981

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 20131982
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10065991
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 4486.8677270452
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999006556
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20131981 can be divided by 2 positive divisors. The sum of these divisors (counting 20131981) is 20131982, the average is 10065991.

Base conversion 20131981

Base System Value
2 Binary 1001100110011000010001101
3 Ternary 1101212210212221
4 Quaternary 1030303002031
5 Quinary 20123210411
6 Senary 1555255341
8 Octal 114630215
10 Decimal 20131981
12 Duodecimal 68aa551
16 Hexadecimal 133308d
20 Vigesimal 65g9j1
36 Base36 bzhxp

Cryptographic Hash Functions

md5 6a32bfcada106f5b9722ee7951090b8d
sha1 487fb404a3adadd354c20615d367a30022a4a348
sha256 2a9f071e8b3405770ecaacca9709e5ac93f978022602f5757788135851677386
sha512 942d9b8324e92a2a4875815280b74cf5c7dcb0541f191806e56a8a89ee7ce91a4bd7163cb18d827ab87edca52ce14adcbe19688c6e6f4c46a201db18250c290f
ripemd-160 0907b79bfa98745a155da99b9f734256af87ef34

20131981 as geometric shapes

Circle

Radius = n
Diameter 40263962
Circumference 126492967.22362
Area 1.2732770063898E+15

Sphere

Radius = n
Volume 3.4178118000501E+22
Surface area 5.093108025559E+15
Circumference 126492967.22362

Square

Length = n
Perimeter 80527924
Area 405296658984361
Diagonal 28470920.567637

Cube

Length = n
Surface area 2431779953906166
Volume 8.1594246380366E+21
Space diagonal 34869613.949011

Equilateral Triangle

Length = n
Perimeter 60395943
Area 1.7549860137471E+14
Altitude 17434806.974506

Triangular Pyramid

Length = n
Surface area 1.7549860137471E+14
Volume 9.6159741535605E+20
Height 9490306.8558792