31191212 is an even 8-digits composite number following 31191211
and preceding 31191213 . In scientific notation, it is written as 3.1191212 × 10^7.
The sum of its digits is 20. It has a total of 4 prime factors and 12 positive divisors.
There are 14395920 positive integers (up to 31191212) that are relatively prime to 31191212.
31191212 has 12 divisors, whose sum is 58783536
The reverse of 31191212 is 21219113
Previous prime number is 13
Is Prime? no
Number parity even
Number length 8
Sum of Digits 20
Digital Root 2
Name
thirty-one million one hundred ninety-one thousand two hundred twelve
Scientific notation
3.1191212 × 10^7
Engineering notation
3.1191212 × 10^6
Prime Factorization
2 × 2 × 13 × 599831
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
15595606
Product of the distinct prime numbers
The prime factorization of 31191212 is 2 × 2 × 13 × 599831.
Since it has a total of 4 prime factors.
5 , 3 , 60 , 36 , 487 , 628 , 2413 , 5064 , 34699 , 14735 , 47061 , 422361 , 7724107 , 3000168 , 2019484 , 96465707 , 504519810 , 19636353 , 2977145296 , 2295369087
n×2
62382424
n×3
93573636
n×4
124764848
n×5
155956060
n÷2
15595606
n÷3
10397070.666667
n÷3
7797803
n÷5
6238242.4
n2
972891706028944
n3
3.034567145579E+22
n4
9.4651827165991E+29
n5
2.9523052073218E+37
2 √n
5584.9093099172
3 √n
314.78262318464
4 √n
74.732250801894
5 √n
31.535988611632
1 , 2 , 4 , 13 , 26 , 52 , 599831 , 1199662 , 2399324 , 7797803 , 15595606 , 31191212
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-31191211
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 31191212 can be divided by 12 positive divisors.
The sum of these divisors (counting 31191212) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1110110111111000010101100
3
Ternary
2011200200022002
4
Quaternary
1312333002230
5
Quinary
30441104322
6
Senary
3032311432
8
Octal
166770254
10
Decimal
31191212
12
Duodecimal
a542578
16
Hexadecimal
1dbf0ac
20
Vigesimal
9eii0c
36
Base36
ikjak
md5
bbbdcb2b8076244045eb43916e55c7d6
sha1
653757b509bfe7b61e8f99eb5ee96e8113b648d0
sha256
925f7bf1c7c03722c7013e903a9c20de1d9ed6f77aee2c26e630ce613597a9bb
sha512
c3589473005fe746a1047e773cc0abcf45c3774053ad2339acbe8bf9090a1afcd4dd6814dc6c2214fb201fe813e2f6081ad170eb6191eb33a211fbfcbd77ab72
ripemd-160
e2964bbc47ce00b6f4bd416ed40612014e9a3ce9
Diameter
62382424
Circumference
195980164.95152
Area
3.056429436399E+15
Volume
1.2711165135168E+23
Surface area
1.2225717745596E+16
Circumference
195980164.95152
Perimeter
124764848
Area
972891706028944
Diagonal
44111035.037254
Surface area
5837350236173664
Volume
3.034567145579E+22
Space diagonal
54024763.933652
Perimeter
93573636
Area
4.2127446627612E+14
Altitude
27012381.966826
Surface area
4.2127446627612E+14
Volume
3.5762716776747E+21
Height
14703678.345751