21931311 is an odd 8-digits composite number following 21931310
and preceding 21931312 . In scientific notation, it is written as 2.1931311 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 14402520 positive integers (up to 21931311) that are relatively prime to 21931311.
21931311 has 8 divisors, whose sum is 29678464
The reverse of 21931311 is 11313912
Previous prime number is 67
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million nine hundred thirty-one thousand three hundred eleven
Scientific notation
2.1931311 × 10^7
Engineering notation
2.1931311 × 10^6
Prime Factorization
3 × 67 × 109111
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21931311
Product of the distinct prime numbers
The prime factorization of 21931311 is 3 × 67 × 109111.
Since it has a total of 3 prime factors.
10 , 9 , 81 , 88 , 707 , 745 , 4507 , 5739 , 58886 , 15429 , 314873 , 897992 , 2319770 , 6953724 , 754365 , 87181561 , 912348954 , 756222621 , 8360442367 , 4840790773
n×2
43862622
n×3
65793933
n×4
87725244
n×5
109656555
n÷2
10965655.5
n÷3
7310437
n÷3
5482827.75
n÷5
4386262.2
n2
480982402178721
n3
1.0548574647709E+22
n4
2.3134407120561E+29
n5
5.0736787736164E+36
2 √n
4683.0877634313
3 √n
279.91200891598
4 √n
68.433089682049
5 √n
29.390902272595
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
-21931310
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 21931311 can be divided by 8 positive divisors.
The sum of these divisors (counting 21931311) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011101010010100101111
3
Ternary
1112021020002210
4
Quaternary
1103222110233
5
Quinary
21103300221
6
Senary
2102021503
8
Octal
123522457
10
Decimal
21931311
12
Duodecimal
7417893
16
Hexadecimal
14ea52f
20
Vigesimal
6h185b
36
Base36
d22b3
md5
afb30d625336cf47131fc3ba957ddd9a
sha1
47df56a234cace1c1a28c227e821755d95054d0e
sha256
51142b872aef8a0d1eee2373f37261eaecf28bd6ddad81a9f5edc6d3ad71517f
sha512
f8fd6c8dc50a3981cefb8f2c4b2f83c1a2fe7e739e16941542704f637d663d97d78cdefb124d74503de990030e5b77dfd6e172574777145f64ffeeb8a9dfddd7
ripemd-160
e33e0c578cea3ddf3c828968a32f74828d95d41b
Diameter
43862622
Circumference
137798491.04239
Area
1.5110507811906E+15
Volume
4.418576615878E+22
Surface area
6.0442031247626E+15
Circumference
137798491.04239
Perimeter
87725244
Area
480982402178721
Diagonal
31015557.456822
Surface area
2885894413072326
Volume
1.0548574647709E+22
Space diagonal
37986144.928594
Perimeter
65793933
Area
2.0827148953002E+14
Altitude
18993072.464297
Surface area
2.0827148953002E+14
Volume
1.2431614442079E+21
Height
10338519.152274