131991907 is an odd 9-digits composite number following 131991906
and preceding 131991908 . In scientific notation, it is written as 1.31991907 × 10^8.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 131228776 positive integers (up to 131991907) that are relatively prime to 131991907.
131991907 has 4 divisors, whose sum is 132755040
The reverse of 131991907 is 709199131
Previous prime number is 173
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 40
Digital Root 4
Name
one hundred thirty-one million nine hundred ninety-one thousand nine hundred seven
Scientific notation
1.31991907 × 10^8
Engineering notation
1.31991907 × 10^6
Prime Factorization
173 × 762959
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
131991907
Product of the distinct prime numbers
The prime factorization of 131991907 is 173 × 762959.
Since it has a total of 2 prime factors.
10 , 10 , 61 , 10 , 79 , 989 , 4133 , 4374 , 29088 , 25817 , 920204 , 743542 , 7059637 , 9074788 , 5322823 , 41008226 , 978320020 , 242767822 , 8756919128 , 9234041430
n×2
263983814
n×3
395975721
n×4
527967628
n×5
659959535
n÷2
65995953.5
n÷3
43997302.333333
n÷3
32997976.75
n÷5
26398381.4
n2
17421863513496649
n3
2.2995449886401E+24
n4
3.0352132828291E+32
n5
4.0062358935234E+40
2 √n
11488.77308506
3 √n
509.15393102859
4 √n
107.1856944049
5 √n
42.083268277838
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
-131991906
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 131991907 can be divided by 4 positive divisors.
The sum of these divisors (counting 131991907) is 1, the average is 0.25.
Base
System
Value
2
Binary
111110111100000100101100011
3
Ternary
100012100212212011
4
Quaternary
13313200211203
5
Quinary
232242220112
6
Senary
21033013351
8
Octal
767404543
10
Decimal
131991907
12
Duodecimal
38254257
16
Hexadecimal
7de0963
20
Vigesimal
214ijf7
36
Base36
26l1lv
md5
da75b66af4cfc12b1fae8cf7b3475648
sha1
5dc7d63659cd8b92f20d5fbc3318f75ba86f6724
sha256
0e4282f71f29aba537558a649f5647e689dce9dcb275f96ff15e97db74c8c378
sha512
18292f135a2d8c457d408c25407133beaa5ade1289c248b4f8765749617cdf05cb2013db76851ec5dca0b06981caef7ad3926d0e07157e6bf8f86ba75d960e18
ripemd-160
91ec7f92c75f2c5bea2cf62d8e84fa6a9103bb4e
Diameter
263983814
Circumference
829329610.72901
Area
5.4732398425845E+16
Volume
9.6323115238815E+24
Surface area
2.1892959370338E+17
Circumference
829329610.72901
Perimeter
527967628
Area
17421863513496649
Diagonal
186664745.00289
Surface area
104531181080979894
Volume
2.2995449886401E+24
Space diagonal
228616689.11191
Perimeter
395975721
Area
7.5438881919767E+15
Altitude
114308344.55595
Surface area
7.5438881919767E+15
Volume
2.7100397585183E+23
Height
62221581.667629