21031143 is an odd 8-digits composite number following 21031142
and preceding 21031144 . In scientific notation, it is written as 2.1031143 × 10^7.
The sum of its digits is 15. It has a total of 4 prime factors and 16 positive divisors.
There are 11859120 positive integers (up to 21031143) that are relatively prime to 21031143.
21031143 has 16 divisors, whose sum is 28992000
The reverse of 21031143 is 34113012
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 15
Digital Root 6
Name
twenty-one million thirty-one thousand one hundred forty-three
Scientific notation
2.1031143 × 10^7
Engineering notation
2.1031143 × 10^6
Prime Factorization
3 × 49 × 79 × 1811
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21031143
Product of the distinct prime numbers
The prime factorization of 21031143 is 3 × 49 × 79 × 1811.
Since it has a total of 4 prime factors.
9 , 6 , 63 , 55 , 393 , 272 , 3588 , 7976 , 58414 , 49715 , 122175 , 49583 , 5371046 , 6254104 , 15039677 , 44952638 , 822395906 , 902975568 , 3892001035 , 2865434111
n×2
42062286
n×3
63093429
n×4
84124572
n×5
105155715
n÷2
10515571.5
n÷3
7010381
n÷3
5257785.75
n÷5
4206228.6
n2
442308975886449
n3
9.3022633220515E+21
n4
1.9563723014972E+29
n5
4.1144745634027E+36
2 √n
4585.9724159659
3 √n
276.02873309348
4 √n
67.719808150687
5 √n
29.145571478674
1 , 3 , 49 , 79 , 147 , 237 , 1811 , 3871 , 5433 , 11613 , 88739 , 143069 , 266217 , 429207 , 7010381 , 21031143
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
-21031142
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 21031143 can be divided by 16 positive divisors.
The sum of these divisors (counting 21031143) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000001110100011100111
3
Ternary
1110120111022020
4
Quaternary
1100032203213
5
Quinary
20340444033
6
Senary
2030434223
8
Octal
120164347
10
Decimal
21031143
12
Duodecimal
7062973
16
Hexadecimal
140e8e7
20
Vigesimal
6b8hh3
36
Base36
cirqf
md5
965ccbbc1949c5b3798c6bb04bfa3962
sha1
775b0c1fd23ea99753cff6036abf4c8922416f63
sha256
96441326c264fc8971cde8adf7284f718706c5f861c2d794e193d4bca51b7848
sha512
4a8dadc07a298d503f665d3b3f795a38d287a423e9a24a07f0522fa63fa1dbded5d51484140bd97cdebfea04444327c7c114bcbcccf37fcaed12cb3b217a6a04
ripemd-160
5a42a2d853afcf8edbe7927022e6a986d14242c5
Diameter
42062286
Circumference
132142568.69079
Area
1.3895546292617E+15
Volume
3.8965229485753E+22
Surface area
5.5582185170468E+15
Circumference
132142568.69079
Perimeter
84124572
Area
442308975886449
Diagonal
29742527.662808
Surface area
2653853855318694
Volume
9.3022633220515E+21
Space diagonal
36427008.217247
Perimeter
63093429
Area
1.9152540471977E+14
Altitude
18213504.108623
Surface area
1.9152540471977E+14
Volume
1.0962822459009E+21
Height
9914175.8876027