31397988 is an even 8-digits composite number following 31397987
and preceding 31397989 . In scientific notation, it is written as 3.1397988 × 10^7.
The sum of its digits is 48. It has a total of 5 prime factors and 24 positive divisors.
There are 10452960 positive integers (up to 31397988) that are relatively prime to 31397988.
31397988 has 24 divisors, whose sum is 73353280
The reverse of 31397988 is 88979313
Previous prime number is 1831
Is Prime? no Number parity even Number length 8 Sum of Digits 48 Digital Root 3
Name
thirty-one million three hundred ninety-seven thousand nine hundred eighty-eight
Scientific notation
3.1397988 × 10^7
Engineering notation
3.1397988 × 10^6
Prime Factorization
2 × 2 × 3 × 1831 × 1429
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
15698994 Product of the distinct prime numbers
The prime factorization of 31397988 is 2 × 2 × 3 × 1831 × 1429.
Since it has a total of 5 prime factors.
2 , 5 , 46 , 1 , 498 , 100 , 3739 , 453 , 98885 , 37871 , 952569 , 899373 , 2916223 , 936885 , 63470209 , 13290652 , 608895660 , 246213486 , 8264425131 , 3105056847
n×2
62795976
n×3
94193964
n×4
125591952
n×5
156989940
n÷2
15698994
n÷3
10465996
n÷3
7849497
n÷5
6279597.6
n2
985833650448144
n3
3.0953193126767E+22
n4
9.7186798635591E+29
n5
3.0514699373187E+37
2 √n5603.3907591743
3 √n315.47668819279
4 √n74.855799769786
5 √n31.577690501711
1 , 2 , 3 , 4 , 6 , 12 , 1429 , 1831 , 2858 , 3662 , 4287 , 5493 , 5716 , 7324 , 8574 , 10986 , 17148 , 21972 , 2616499 , 5232998 , 7849497 , 10465996 , 15698994 , 31397988
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-31397987 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 31397988 can be divided by 24 positive divisors.
The sum of these divisors (counting 31397988) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
1110111110001100001100100
3
Ternary
2012002011221110
4
Quaternary
1313301201210
5
Quinary
31014213423
6
Senary
3040545020
8
Octal
167614144
10
Decimal
31397988
12
Duodecimal
a622170
16
Hexadecimal
1df1864
20
Vigesimal
9g4ej8
36
Base36
ioyuc
md5
b7a08250caf6bbfe0ad7e3f172d7cc7f
sha1
135efe9dd383024b75141c5867a03f5a53ecec51
sha256
3a8f23e6af75fdc79f35a8681a69a6c4c7dc7fe8751cf15ebb622ac22b9044e4
sha512
69e39299dd6e5871b6826d6a6db4bdb9f685dfd1ac36c1a2645fba48a357bb6a9c4d6377f7d58537ad08f7befc8b629f6e73c75dcef0466ba2dc0680e3341230
ripemd-160
daa184487ea9b84d7e40a5cd4459f2fd2d63ba31
Diameter
62795976
Circumference
197279376.8766
Area
3.0970877539095E+15
Volume
1.2965643217626E+23
Surface area
1.2388351015638E+16
Circumference
197279376.8766
Perimeter
125591952
Area
985833650448144
Diagonal
44403460.460828
Surface area
5915001902688864
Volume
3.0953193126767E+22
Space diagonal
54382910.471438
Perimeter
94193964
Area
4.2687849259682E+14
Altitude
27191455.235719
Surface area
4.2687849259682E+14
Volume
3.647868793219E+21
Height
14801153.486943