31139985 is an odd 8-digits composite number following 31139984
and preceding 31139986 . In scientific notation, it is written as 3.1139985 × 10^7.
The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors.
There are 16607984 positive integers (up to 31139985) that are relatively prime to 31139985.
31139985 has 4 divisors, whose sum is 33216000
The reverse of 31139985 is 58993113
Previous prime number is 15
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
thirty-one million one hundred thirty-nine thousand nine hundred eighty-five
Scientific notation
3.1139985 × 10^7
Engineering notation
3.1139985 × 10^6
Prime Factorization
15 × 2075999
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
31139985
Product of the distinct prime numbers
The prime factorization of 31139985 is 15 × 2075999.
Since it has a total of 2 prime factors.
2 , 6 , 88 , 96 , 652 , 27 , 9106 , 3125 , 27143 , 22684 , 779917 , 111961 , 8120718 , 7643449 , 19352255 , 15906135 , 751122009 , 670994680 , 2532297940 , 4596924249
n×2
62279970
n×3
93419955
n×4
124559940
n×5
155699925
n÷2
15569992.5
n÷3
10379995
n÷3
7784996.25
n÷5
6227997
n2
969698665800225
n3
3.0196401907539E+22
n4
9.4031550245474E+29
n5
2.9281410641708E+37
2 √n
5580.321227313
3 √n
314.61020063013
4 √n
74.701547690212
5 √n
31.525623150869
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
-31139984
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 31139985 can be divided by 4 positive divisors.
The sum of these divisors (counting 31139985) is 1, the average is 0.25.
Base
System
Value
2
Binary
1110110110010100010010001
3
Ternary
2011121002000210
4
Quaternary
1312302202101
5
Quinary
30432434420
6
Senary
3031234333
8
Octal
166624221
10
Decimal
31139985
12
Duodecimal
a5189a9
16
Hexadecimal
1db2891
20
Vigesimal
9ec9j5
36
Base36
ijfrl
md5
d137b0707812603bc3d61e2630bcbd34
sha1
c4ebc34a002bbcbf6581b001b891c46d9d33bd2e
sha256
db5503290306b63c4c59534d25f52ea9bb11fa5fe4722dfe8556e825411347d7
sha512
4f7e54b4eafe5792ad75d29af81854e90f3a48fc7837f559e544d7f5114bb171d8b659cb5c1cebfd05a71d29c478080cdb83a5d0be84bafc83883c982c63a2d7
ripemd-160
0684417cd20ecce4533e0626308657f5b96a9a00
Diameter
62279970
Circumference
195658296.21779
Area
3.0463982046738E+15
Volume
1.2648639253009E+23
Surface area
1.2185592818695E+16
Circumference
195658296.21779
Perimeter
124559940
Area
969698665800225
Diagonal
44038589.119095
Surface area
5818191994801350
Volume
3.0196401907539E+22
Space diagonal
53936036.166933
Perimeter
93419955
Area
4.1989183929944E+14
Altitude
26968018.083466
Surface area
4.1989183929944E+14
Volume
3.5586800927092E+21
Height
14679529.706365