21031631 is an odd 8-digits composite number following 21031630
and preceding 21031632 . In scientific notation, it is written as 2.1031631 × 10^7.
The sum of its digits is 17. It has a total of 2 prime factors and 4 positive divisors.
There are 21008064 positive integers (up to 21031631) that are relatively prime to 21031631.
21031631 has 4 divisors, whose sum is 21055200
The reverse of 21031631 is 13613012
Previous prime number is 929
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 17
Digital Root 8
Name
twenty-one million thirty-one thousand six hundred thirty-one
Scientific notation
2.1031631 × 10^7
Engineering notation
2.1031631 × 10^6
Prime Factorization
929 × 22639
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21031631
Product of the distinct prime numbers
The prime factorization of 21031631 is 929 × 22639.
Since it has a total of 2 prime factors.
7 , 8 , 100 , 39 , 815 , 520 , 2224 , 494 , 56505 , 8143 , 675547 , 402138 , 8821310 , 1284987 , 55896399 , 31360988 , 587882422 , 508636287 , 6667334761 , 3233353416
n×2
42063262
n×3
63094893
n×4
84126524
n×5
105158155
n÷2
10515815.5
n÷3
7010543.6666667
n÷3
5257907.75
n÷5
4206326.2
n2
442329502520161
n3
9.3029108774176E+21
n4
1.9565538879973E+29
n5
4.1149519403975E+36
2 √n
4586.025621385
3 √n
276.03086803815
4 √n
67.720200984529
5 √n
29.145706734345
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21031630
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21031631 can be divided by 4 positive divisors.
The sum of these divisors (counting 21031631) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001110101011001111
3
Ternary
1110120111222022
4
Quaternary
1100032223033
5
Quinary
20341003011
6
Senary
2030440355
8
Octal
120165317
10
Decimal
21031631
12
Duodecimal
70630bb
16
Hexadecimal
140eacf
20
Vigesimal
6b8j1b
36
Base36
cis3z
md5
2054941e3ca0ea6812575d687318f7fc
sha1
24b2d27fb962105a69f54bb62469a9be84313195
sha256
06d23c9a31b72a944a67e1b88f3cc36ffb63f99b1ad23d8a1c2d181f860aa391
sha512
6a29874b1e14f6ab8f1578129c94a4f9ca1fb57d37aa39c045cf60a477331010defc698b5269eca0153cb6596a6eb8c4860f3d231fc2aa36e16193738b2c2795
ripemd-160
0a374fd82c9a051ffd87fcb99187796e6f4cb4dc
Diameter
42063262
Circumference
132145634.88522
Area
1.3896191155834E+15
Volume
3.8967941959328E+22
Surface area
5.5584764623335E+15
Circumference
132145634.88522
Perimeter
84126524
Area
442329502520161
Diagonal
29743217.799026
Surface area
2653977015120966
Volume
9.3029108774176E+21
Space diagonal
36427853.458041
Perimeter
63094893
Area
1.915342930129E+14
Altitude
18213926.72902
Surface area
1.915342930129E+14
Volume
1.0963585610327E+21
Height
9914405.9330088