Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

20131991 (number)

20131991 is an odd 8-digits composite number following 20131990 and preceding 20131992. In scientific notation, it is written as 2.0131991 × 10^7. The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors. There are 18301800 positive integers (up to 20131991) that are relatively prime to 20131991.

Interesting facts

20131991 has 4 divisors, whose sum is 21962184
The reverse of 20131991 is 19913102
Previous prime number is 11

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8

Name

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

Notation

Scientific notation	2.0131991 × 10^7
Engineering notation	2.0131991 × 10^6

Prime Factorization of 20131991

Prime Factorization 11 × 1830181

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20131991	Product of the distinct prime numbers

The prime factorization of 20131991 is 11 × 1830181. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 5, 8, 44, 297, 971, 8728, 1141, 1036, 15311, 886258, 792002, 2756179, 2587157, 91148907, 96193346, 495000551, 652761499, 33095675, 6574400664

Basic calculations (n = 20131991)

Multiplication

n×y

n×2	40263982
n×3	60395973
n×4	80527964
n×5	100659955

Division

n÷y

n÷2	10065995.5
n÷3	6710663.6666667
n÷3	5032997.75
n÷5	4026398.2

Exponentiation

n^y

n²	405297061624081
n³	8.1594367969424E+21
n⁴	1.6426570816111E+29
n⁵	3.3069957583082E+36

Nth Root

^y√n

²√n	4486.8687299719
³√n	272.03758401501
⁴√n	66.984093111514
⁵√n	28.891982658367

Divisors of 20131991

1, 11, 1830181, 20131991

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20131990	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20131991 can be divided by 4 positive divisors. The sum of these divisors (counting 20131991) is 1, the average is 0.25.

Base conversion 20131991

Base	System	Value
2	Binary	1001100110011000010010111
3	Ternary	1101212210220022
4	Quaternary	1030303002113
5	Quinary	20123210431
6	Senary	1555255355
8	Octal	114630227
10	Decimal	20131991
12	Duodecimal	68aa55b
16	Hexadecimal	1333097
20	Vigesimal	65g9jb
36	Base36	bzhxz

Cryptographic Hash Functions

md5	e55b40d5ec363fe81c740fb12c1dd61c
sha1	765d1cd97dc29729335ff86eacbdcb18e1f102ce
sha256	96fccc0209b67b5667fdee1f280a0ad8b59bcb7c2b3e5fd6322e91bc2c5dde00
sha512	6eaa3a715fa28f88c5e609fca9e3677f3d4cc379af33e951c557cd899779907766980cf5abc70f683784814e6fc148e5cba5eb90cb0492d1f2dc21bda4b913e3
ripemd-160	88844df728c00f591770e942a9e1eb2546ae8500

20131991 as geometric shapes

Circle

Radius = n

Diameter	40263982
Circumference	126493030.05547
Area	1.2732782713197E+15

Sphere

Radius = n

Volume	3.4178168931606E+22
Surface area	5.093113085279E+15
Circumference	126493030.05547

Square

Length = n

Perimeter	80527964
Area	405297061624081
Diagonal	28470934.709773

Cube

Length = n

Surface area	2431782369744486
Volume	8.1594367969424E+21
Space diagonal	34869631.269519

Equilateral Triangle

Length = n

Perimeter	60395973
Area	1.7549877572282E+14
Altitude	17434815.63476

Triangular Pyramid

Length = n

Surface area	1.7549877572282E+14
Volume	9.6159884829684E+20
Height	9490311.5699244