31305989 is an odd 8-digits composite number following 31305988
and preceding 31305990 . In scientific notation, it is written as 3.1305989 × 10^7.
The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors.
There are 26270640 positive integers (up to 31305989) that are relatively prime to 31305989.
31305989 has 8 divisors, whose sum is 36779232
The reverse of 31305989 is 98950313
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
thirty-one million three hundred five thousand nine hundred eighty-nine
Scientific notation
3.1305989 × 10^7
Engineering notation
3.1305989 × 10^6
Prime Factorization
13 × 11 × 218923
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
31305989
Product of the distinct prime numbers
The prime factorization of 31305989 is 13 × 11 × 218923.
Since it has a total of 3 prime factors.
8 , 9 , 43 , 39 , 917 , 974 , 1921 , 671 , 51333 , 47505 , 260418 , 668171 , 3913003 , 9802659 , 74800993 , 55565370 , 478550756 , 625499014 , 8776963226 , 9926029054
n×2
62611978
n×3
93917967
n×4
125223956
n×5
156529945
n÷2
15652994.5
n÷3
10435329.666667
n÷3
7826497.25
n÷5
6261197.8
n2
980064947268121
n3
3.0681902458461E+22
n4
9.6052730086366E+29
n5
3.0070257115038E+37
2 √n
5595.1755110988
3 √n
315.16826149479
4 √n
74.800905817368
5 √n
31.559163665852
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
-31305988
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 31305989 can be divided by 8 positive divisors.
The sum of these divisors (counting 31305989) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110111011011000100000101
3
Ternary
2011220111202002
4
Quaternary
1313123010011
5
Quinary
31003242424
6
Senary
3034555045
8
Octal
167330405
10
Decimal
31305989
12
Duodecimal
a598a85
16
Hexadecimal
1ddb105
20
Vigesimal
9fd4j9
36
Base36
imzut
md5
3a69681e2ab858e1bd3aaf03ff83a979
sha1
89ed34ee18d493979bc563c6a6f7bf092044192b
sha256
77360bc47cf8ed5ed14d36e8fabc1492515b2349395c77b2739dc2e027837079
sha512
8d67f4d902a32df1abc3fb0115808d75de5f181f3dfbbc69b22093e348b2b693e4f067266a0439fc55e98b3d48d9d3fdff051020feda0e12dd8ba3b3019e8627
ripemd-160
b8047fcab37def5f9539e61bb25cb92dec711403
Diameter
62611978
Circumference
196701330.11153
Area
3.0789648383784E+15
Volume
1.2852005248221E+23
Surface area
1.2315859353514E+16
Circumference
196701330.11153
Perimeter
125223956
Area
980064947268121
Diagonal
44273354.227303
Surface area
5880389683608726
Volume
3.0681902458461E+22
Space diagonal
54223563.529192
Perimeter
93917967
Area
4.2438057084642E+14
Altitude
27111781.764596
Surface area
4.2438057084642E+14
Volume
3.615896881347E+21
Height
14757784.742434