31381915 is an odd 8-digits composite number following 31381914
and preceding 31381916 . In scientific notation, it is written as 3.1381915 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 22761984 positive integers (up to 31381915) that are relatively prime to 31381915.
31381915 has 8 divisors, whose sum is 33311520
The reverse of 31381915 is 51918313
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
thirty-one million three hundred eighty-one thousand nine hundred fifteen
Scientific notation
3.1381915 × 10^7
Engineering notation
3.1381915 × 10^6
Prime Factorization
4205 × 17 × 439
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
31381915
Product of the distinct prime numbers
The prime factorization of 31381915 is 4205 × 17 × 439.
Since it has a total of 3 prime factors.
9 , 4 , 35 , 46 , 301 , 514 , 5532 , 9227 , 71482 , 25366 , 523707 , 554923 , 691329 , 7033807 , 94132211 , 48865960 , 999397788 , 805782653 , 3695134881 , 6520119695
n×2
62763830
n×3
94145745
n×4
125527660
n×5
156909575
n÷2
15690957.5
n÷3
10460638.333333
n÷3
7845478.75
n÷5
6276383
n2
984824589067225
n3
3.0905681544018E+22
n4
9.6987947123143E+29
n5
3.043667512643E+37
2 √n
5601.9563547032
3 √n
315.4228469265
4 √n
74.846218038744
5 √n
31.574456841138
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
-31381914
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 31381915 can be divided by 8 positive divisors.
The sum of these divisors (counting 31381915) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110111101101100110011011
3
Ternary
2012001100220011
4
Quaternary
1313231212123
5
Quinary
31013210130
6
Senary
3040342351
8
Octal
167554633
10
Decimal
31381915
12
Duodecimal
a6149b7
16
Hexadecimal
1ded99b
20
Vigesimal
9g2eff
36
Base36
iomfv
md5
6ad742f62d5354730b128a63dd256aa0
sha1
d4557e3e8673a5e1fb24b2db63fd59eb641c1739
sha256
028cfbcadc9feeb5bb2c4dfdd85ee79d94887b831d1cc817bae037f23a98eceb
sha512
bcbec3a683ad71adf71684a73e9ae8f2b0e0f03520859b677f66f4b580a96736c11631d9d1028c6424bf0d7c36e12d20560db0636f4fb993bbdbc73ac019fe58
ripemd-160
f383d5083b77015a8ebdbad7d41baabd88daef52
Diameter
62763830
Circumference
197178387.23916
Area
3.0939176940882E+15
Volume
1.2945741612383E+23
Surface area
1.2375670776353E+16
Circumference
197178387.23916
Perimeter
125527660
Area
984824589067225
Diagonal
44380729.80624
Surface area
5908947534403350
Volume
3.0905681544018E+22
Space diagonal
54355071.218808
Perimeter
94145745
Area
4.2644155620189E+14
Altitude
27177535.609404
Surface area
4.2644155620189E+14
Volume
3.6422694994945E+21
Height
14793576.60208