31387968 is an even 8-digits composite number following 31387967
and preceding 31387969 . In scientific notation, it is written as 3.1387968 × 10^7.
The sum of its digits is 45. It has a total of 8 prime factors and 28 positive divisors.
There are 10462464 positive integers (up to 31387968) that are relatively prime to 31387968.
31387968 has 28 divisors, whose sum is 69207380
The reverse of 31387968 is 86978313
Previous prime number is 9
Is Prime? no
Number parity even
Number length 8
Sum of Digits 45
Digital Root 9
Name
thirty-one million three hundred eighty-seven thousand nine hundred sixty-eight
Scientific notation
3.1387968 × 10^7
Engineering notation
3.1387968 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 2 × 2 × 9 × 54493
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
8
Total number of prime factors
rad
Radical
980874
Product of the distinct prime numbers
The prime factorization of 31387968 is 2 × 2 × 2 × 2 × 2 × 2 × 9 × 54493.
Since it has a total of 8 prime factors.
2 , 2 , 54 , 57 , 241 , 17 , 6647 , 7017 , 88523 , 26266 , 683659 , 946362 , 4263528 , 7800984 , 7874378 , 85357841 , 332428109 , 217279386 , 4296044617 , 9097275054
n×2
62775936
n×3
94163904
n×4
125551872
n×5
156939840
n÷2
15693984
n÷3
10462656
n÷3
7846992
n÷5
6277593.6
n2
985204535169024
n3
3.092356842334E+22
n4
9.7062797611761E+29
n5
3.0466039854284E+37
2 √n
5602.4965863443
3 √n
315.44312539742
4 √n
74.849826895888
5 √n
31.575674774738
1 , 2 , 4 , 8 , 9 , 16 , 18 , 32 , 36 , 64 , 72 , 144 , 288 , 576 , 54493 , 108986 , 217972 , 435944 , 490437 , 871888 , 980874 , 1743776 , 1961748 , 3487552 , 3923496 , 7846992 , 15693984 , 31387968
28 divisors
τ
Total Divisors
28
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-31387967
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.035714285714286
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
28
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 31387968 can be divided by 28 positive divisors.
The sum of these divisors (counting 31387968) is 1, the average is 0.035714285714286.
Base
System
Value
2
Binary
1110111101111000101000000
3
Ternary
2012001200012100
4
Quaternary
1313233011000
5
Quinary
31013403333
6
Senary
3040430400
8
Octal
167570500
10
Decimal
31387968
12
Duodecimal
a618400
16
Hexadecimal
1def140
20
Vigesimal
9g39i8
36
Base36
ior40
md5
202a80093c7503c1b950939602f16eaf
sha1
3b0bd30d2bc49153299c7e17190649043ede27c7
sha256
d7a8b4f7bc426caab428d22ddea7ec83abb8c5fbe11614a322615750a8e47d89
sha512
6c19ddb62dd36d3544b4a04fb3aa9529817dc4285dae3d73acd277a2699aa044850aea62eb21f2d87372fcdcb1cd9c104e0778efc20ba143ef6bb9fda0eb14bb
ripemd-160
5f0d837248dc6de20f1d795fb6154d5f0b7a39d7
Diameter
62775936
Circumference
197216419.35982
Area
3.0951113299704E+15
Volume
1.2953234050873E+23
Surface area
1.2380445319881E+16
Circumference
197216419.35982
Perimeter
125551872
Area
985204535169024
Diagonal
44389290.040933
Surface area
5911227211014144
Volume
3.092356842334E+22
Space diagonal
54365555.322346
Perimeter
94163904
Area
4.2660607769001E+14
Altitude
27182777.661173
Surface area
4.2660607769001E+14
Volume
3.6443774884383E+21
Height
14796430.013644