31189991 is an odd 8-digits composite number following 31189990
and preceding 31189992 . In scientific notation, it is written as 3.1189991 × 10^7.
The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors.
There are 26703648 positive integers (up to 31189991) that are relatively prime to 31189991.
31189991 has 8 divisors, whose sum is 35686560
The reverse of 31189991 is 19998113
Previous prime number is 3989
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
thirty-one million one hundred eighty-nine thousand nine hundred ninety-one
Scientific notation
3.1189991 × 10^7
Engineering notation
3.1189991 × 10^6
Prime Factorization
7 × 3989 × 1117
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
31189991
Product of the distinct prime numbers
The prime factorization of 31189991 is 7 × 3989 × 1117.
Since it has a total of 3 prime factors.
3 , 4 , 89 , 89 , 746 , 996 , 4587 , 4704 , 13953 , 15536 , 882642 , 631051 , 9897467 , 2157523 , 63330673 , 28671512 , 404959388 , 73287013 , 6391946250 , 7488974347
n×2
62379982
n×3
93569973
n×4
124759964
n×5
155949955
n÷2
15594995.5
n÷3
10396663.666667
n÷3
7797497.75
n÷5
6237998.2
n2
972815538580081
n3
3.0342107892973E+22
n4
9.4637007210285E+29
n5
2.9517274031557E+37
2 √n
5584.7999964189
3 √n
314.77851567515
4 √n
74.731519430685
5 √n
31.535741708465
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
-31189990
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 31189991 can be divided by 8 positive divisors.
The sum of these divisors (counting 31189991) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110110111110101111100111
3
Ternary
2011200121121212
4
Quaternary
1312332233213
5
Quinary
30441034431
6
Senary
3032302035
8
Octal
166765747
10
Decimal
31189991
12
Duodecimal
a54191b
16
Hexadecimal
1dbebe7
20
Vigesimal
9eiejb
36
Base36
ikicn
md5
ad168e2ea79da49001e406058f756e48
sha1
8f9d41f64713c0785be9bd7caf87b828664f5a7a
sha256
5c3646035b9142a106fa475d5c8a12fdce7a2f3793054741fac9f0b0cf3a65b4
sha512
30bb7af6d7184995e286bab17dbb61548bc7b3606c70a830441b707e3dda3db82f6e759a0dab051ed9ea425c51b076887d4eb0df592e2b3e57e68646b8fd49cc
ripemd-160
79a30c857155f58da551c3c85d4828076988ef4a
Diameter
62379982
Circumference
195972493.18226
Area
3.0561901493012E+15
Volume
1.2709672433466E+23
Surface area
1.2224760597205E+16
Circumference
195972493.18226
Perimeter
124759964
Area
972815538580081
Diagonal
44109308.282495
Surface area
5836893231480486
Volume
3.0342107892973E+22
Space diagonal
54022649.099616
Perimeter
93569973
Area
4.212414848033E+14
Altitude
27011324.549808
Surface area
4.212414848033E+14
Volume
3.5758517077692E+21
Height
14703102.760832