31361281 is an odd 8-digits composite number following 31361280
and preceding 31361282 . In scientific notation, it is written as 3.1361281 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 26881092 positive integers (up to 31361281) that are relatively prime to 31361281.
31361281 has 4 divisors, whose sum is 35841472
The reverse of 31361281 is 18216313
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
thirty-one million three hundred sixty-one thousand two hundred eighty-one
Scientific notation
3.1361281 × 10^7
Engineering notation
3.1361281 × 10^6
Prime Factorization
7 × 4480183
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
31361281
Product of the distinct prime numbers
The prime factorization of 31361281 is 7 × 4480183.
Since it has a total of 2 prime factors.
7 , 6 , 68 , 53 , 216 , 808 , 9270 , 2268 , 83486 , 46111 , 496215 , 432579 , 8160843 , 642798 , 85391671 , 49035180 , 253592802 , 904269895 , 5555076515 , 1600380138
n×2
62722562
n×3
94083843
n×4
125445124
n×5
156806405
n÷2
15680640.5
n÷3
10453760.333333
n÷3
7840320.25
n÷5
6272256.2
n2
983529945960961
n3
3.0844759007197E+22
n4
9.6733115460197E+29
n5
3.0336744159527E+37
2 √n
5600.114373832
3 √n
315.35370028579
4 √n
74.833911923887
5 √n
31.570303628947
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
-31361280
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 31361281 can be divided by 4 positive divisors.
The sum of these divisors (counting 31361281) is 1, the average is 0.25.
Base
System
Value
2
Binary
1110111101000100100000001
3
Ternary
2012000022120221
4
Quaternary
1313220210001
5
Quinary
31012030111
6
Senary
3040103041
8
Octal
167504401
10
Decimal
31361281
12
Duodecimal
a604a81
16
Hexadecimal
1de8901
20
Vigesimal
9g0341
36
Base36
io6ip
md5
3d72d677bb6278ecb3358192550a5900
sha1
7064c430a442073152d8b99baa193b6159e7df32
sha256
f82ec2fa4bfceea60ddf1d510414228a9032fd1331be617de80fb1123206399c
sha512
7cfeb96f3e4a9d9d8282fd6024b5e31b1936da120649f1ab9cafa37bc6b3c78b9d09ecc346d1dd62b3b186faf0cb5e3d3b6dcd07d79a865a63ec6ee0458f4ddd
ripemd-160
8743f15f3c81cede87b5c9168792eb6f5c72b304
Diameter
62722562
Circumference
197048739.99353
Area
3.0898504528165E+15
Volume
1.2920222439834E+23
Surface area
1.2359401811266E+16
Circumference
197048739.99353
Perimeter
125445124
Area
983529945960961
Diagonal
44351548.923594
Surface area
5901179675765766
Volume
3.0844759007197E+22
Space diagonal
54319332.082444
Perimeter
94083843
Area
4.2588095929246E+14
Altitude
27159666.041222
Surface area
4.2588095929246E+14
Volume
3.6350897096756E+21
Height
14783849.641198