31387938 is an even 8-digits composite number following 31387937
and preceding 31387939 . In scientific notation, it is written as 3.1387938 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 10412640 positive integers (up to 31387938) that are relatively prime to 31387938.
31387938 has 8 divisors, whose sum is 47158188
The reverse of 31387938 is 83978313
Previous prime number is 633
Is Prime? no
Number parity even
Number length 8
Sum of Digits 42
Digital Root 6
Name
thirty-one million three hundred eighty-seven thousand nine hundred thirty-eight
Scientific notation
3.1387938 × 10^7
Engineering notation
3.1387938 × 10^6
Prime Factorization
2 × 633 × 24793
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
31387938
Product of the distinct prime numbers
The prime factorization of 31387938 is 2 × 633 × 24793.
Since it has a total of 3 prime factors.
10 , 6 , 47 , 41 , 452 , 569 , 3013 , 314 , 62064 , 90402 , 560909 , 534437 , 2306309 , 9214647 , 99306276 , 37225572 , 128456258 , 150777674 , 9452458650 , 6865674178
n×2
62775876
n×3
94163814
n×4
125551752
n×5
156939690
n÷2
15693969
n÷3
10462646
n÷3
7846984.5
n÷5
6277587.6
n2
985202651891844
n3
3.0923479755017E+22
n4
9.7062426529472E+29
n5
3.0465894260366E+37
2 √n
5602.4939089659
3 √n
315.44302489928
4 √n
74.849809010885
5 √n
31.575668738854
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
-31387937
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 31387938 can be divided by 8 positive divisors.
The sum of these divisors (counting 31387938) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110111101111000100100010
3
Ternary
2012001200011020
4
Quaternary
1313233010202
5
Quinary
31013403223
6
Senary
3040430310
8
Octal
167570442
10
Decimal
31387938
12
Duodecimal
a618396
16
Hexadecimal
1def122
20
Vigesimal
9g39gi
36
Base36
ior36
md5
3a634220580d44bfdff283170ba30811
sha1
e6c5255cccf669be29332b00695063fec4235304
sha256
cd3522de1be429c40a7c9af7e96053b8dae60f4c93b8801179c63b6b9f0fd30d
sha512
d36157ec654465b2bb1bad70205497ccbaedfa7af66963aa7f7240d9a701f0efb2182a77a9821e1f087a616f97e064dfc20184daffa2261bb1a915093e6ca294
ripemd-160
fd3e45b3c834a1a66663f5b76bb3e36da1706bfd
Diameter
62775876
Circumference
197216230.86426
Area
3.0951054134806E+15
Volume
1.2953196909572E+23
Surface area
1.2380421653922E+16
Circumference
197216230.86426
Perimeter
125551752
Area
985202651891844
Diagonal
44389247.614526
Surface area
5911215911351064
Volume
3.0923479755017E+22
Space diagonal
54365503.360822
Perimeter
94163814
Area
4.2660526220707E+14
Altitude
27182751.680411
Surface area
4.2660526220707E+14
Volume
3.6443670387762E+21
Height
14796415.871509