31191213 is an odd 8-digits composite number following 31191212
and preceding 31191214 . In scientific notation, it is written as 3.1191213 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 20654288 positive integers (up to 31191213) that are relatively prime to 31191213.
31191213 has 8 divisors, whose sum is 41868000
The reverse of 31191213 is 31219113
Previous prime number is 149
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
thirty-one million one hundred ninety-one thousand two hundred thirteen
Scientific notation
3.1191213 × 10^7
Engineering notation
3.1191213 × 10^6
Prime Factorization
3 × 149 × 69779
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
31191213
Product of the distinct prime numbers
The prime factorization of 31191213 is 3 × 149 × 69779.
Since it has a total of 3 prime factors.
3 , 2 , 42 , 89 , 740 , 657 , 4604 , 5921 , 59073 , 85275 , 688538 , 965624 , 1392261 , 7893982 , 37319460 , 7128633 , 497235810 , 757382996 , 8920061152 , 9136263947
n×2
62382426
n×3
93573639
n×4
124764852
n×5
155956065
n÷2
15595606.5
n÷3
10397071
n÷3
7797803.25
n÷5
6238242.6
n2
972891768411369
n3
3.0345674374466E+22
n4
9.465183930426E+29
n5
2.9523056805809E+37
2 √n
5584.9093994442
3 √n
314.78262654865
4 √n
74.732251400879
5 √n
31.535988813842
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
-31191212
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 31191213 can be divided by 8 positive divisors.
The sum of these divisors (counting 31191213) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110110111111000010101101
3
Ternary
2011200200022010
4
Quaternary
1312333002231
5
Quinary
30441104323
6
Senary
3032311433
8
Octal
166770255
10
Decimal
31191213
12
Duodecimal
a542579
16
Hexadecimal
1dbf0ad
20
Vigesimal
9eii0d
36
Base36
ikjal
md5
9e9846a81bb287c64015a722d920dedb
sha1
35978244eabc5a73c374ac64cf5fc3bd4b63740f
sha256
1b3895bed5abf51faa31084564189b96edb37ff8430e1cac1354028c822a4d2e
sha512
ca5a386fefee046afb6b4c0742ccc75f940020025bb93a67cf5fd516615249cbf00354949743891f02e66a70557092a9b6ef6fd872a28631583c47ab8211dd2c
ripemd-160
1315fe1ef5014d617269dba200b097a2e17337c8
Diameter
62382426
Circumference
195980171.23471
Area
3.0564296323791E+15
Volume
1.271116635774E+23
Surface area
1.2225718529517E+16
Circumference
195980171.23471
Perimeter
124764852
Area
972891768411369
Diagonal
44111036.451468
Surface area
5837350610468214
Volume
3.0345674374466E+22
Space diagonal
54024765.665703
Perimeter
93573639
Area
4.2127449328851E+14
Altitude
27012382.832851
Surface area
4.2127449328851E+14
Volume
3.5762720216439E+21
Height
14703678.817156