31397947 is an odd 8-digits composite number following 31397946
and preceding 31397948 . In scientific notation, it is written as 3.1397947 × 10^7.
The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors.
There are 25896960 positive integers (up to 31397947) that are relatively prime to 31397947.
31397947 has 16 divisors, whose sum is 37251072
The reverse of 31397947 is 74979313
Previous prime number is 257
Is Prime? no Number parity odd Number length 8 Sum of Digits 43 Digital Root 7
Name
thirty-one million three hundred ninety-seven thousand nine hundred forty-seven
Scientific notation
3.1397947 × 10^7
Engineering notation
3.1397947 × 10^6
Prime Factorization
31 × 7 × 257 × 563
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
31397947 Product of the distinct prime numbers
The prime factorization of 31397947 is 31 × 7 × 257 × 563.
Since it has a total of 4 prime factors.
3 , 7 , 37 , 45 , 907 , 803 , 7192 , 648 , 2223 , 51227 , 471152 , 195335 , 8702615 , 6849293 , 5511578 , 38211783 , 406463885 , 229389581 , 4721494021 , 3332122063
n×2
62795894
n×3
94193841
n×4
125591788
n×5
156989735
n÷2
15698973.5
n÷3
10465982.333333
n÷3
7849486.75
n÷5
6279589.4
n2
985831075814809
n3
3.0953071869386E+22
n4
9.7186291004218E+29
n5
3.051450014077E+37
2 √n5603.387100674
3 √n315.47655087454
4 √n74.855775332796
5 √n31.577682254775
1 , 7 , 31 , 217 , 257 , 563 , 1799 , 3941 , 7967 , 17453 , 55769 , 122171 , 144691 , 1012837 , 4485421 , 31397947
16 divisors
τ Total Divisors
16 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-31397946 Sum of the proper positive divisors of n
A Arithmetic Mean
0.0625 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
16 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 31397947 can be divided by 16 positive divisors.
The sum of these divisors (counting 31397947) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1110111110001100000111011
3
Ternary
2012002011212221
4
Quaternary
1313301200323
5
Quinary
31014213242
6
Senary
3040544511
8
Octal
167614073
10
Decimal
31397947
12
Duodecimal
a622137
16
Hexadecimal
1df183b
20
Vigesimal
9g4eh7
36
Base36
ioyt7
md5
f5361c41d18948d54be20e61bf95ee7c
sha1
a119ef0e0eebda1f611210dc5bcad3d110c063a4
sha256
d6416cb1d1179d62012b37874f81bb902f58c4eb4e884a2ffc8e40201314c86f
sha512
0108546c20604da4093be8175a721bff9853f0c7de890e2a2bada1879ab67ed0533b5c5ad8195ec7ff233e46e49e6fe49acc94c22dcbbfc6e0d8fb1a64699d72
ripemd-160
34554a781d3241326ec11a8cd1379d3ff156b7ce
Diameter
62795894
Circumference
197279119.266
Area
3.0970796654603E+15
Volume
1.2965592425453E+23
Surface area
1.2388318661841E+16
Circumference
197279119.266
Perimeter
125591788
Area
985831075814809
Diagonal
44403402.478072
Surface area
5914986454888854
Volume
3.0953071869386E+22
Space diagonal
54382839.457355
Perimeter
94193841
Area
4.2687737774788E+14
Altitude
27191419.728677
Surface area
4.2687737774788E+14
Volume
3.6478545028996E+21
Height
14801134.159357