1991231055 is an odd 10-digits composite number following 1991231054
and preceding 1991231056 . In scientific notation, it is written as 1.991231055 × 10^9.
The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors.
There are 965442720 positive integers (up to 1991231055) that are relatively prime to 1991231055.
1991231055 has 12 divisors, whose sum is 2237352600
The reverse of 1991231055 is 5501321991
Previous prime number is 11
Is Prime? no Number parity odd Number length 10 Sum of Digits 36 Digital Root 9
Name
one billion nine hundred ninety-one million two hundred thirty-one thousand fifty-five
Scientific notation
1.991231055 × 10^9
Engineering notation
1.991231055 × 10^9
Prime Factorization
45 × 11 × 11 × 365699
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
181021005 Product of the distinct prime numbers
The prime factorization of 1991231055 is 45 × 11 × 11 × 365699.
Since it has a total of 4 prime factors.
3 , 9 , 96 , 97 , 143 , 181 , 2251 , 5648 , 34013 , 37022 , 159381 , 602065 , 2261242 , 7540524 , 73170425 , 97114840 , 630404704 , 727196820 , 6163351755 , 4700130517
n×2
3982462110
n×3
5973693165
n×4
7964924220
n×5
9956155275
n÷2
995615527.5
n÷3
663743685
n÷3
497807763.75
n÷5
398246211
n2
3965001114396413025
n3
7.8952333520957E+27
n4
1.5721233837165E+37
n5
3.1304609039479E+46
2 √n44623.212065023
3 √n1258.0769891201
4 √n211.24206982754
5 √n72.414299080574
1 , 11 , 45 , 121 , 495 , 5445 , 365699 , 4022689 , 16456455 , 44249579 , 181021005 , 1991231055
12 divisors
τ Total Divisors
12 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1991231054 Sum of the proper positive divisors of n
A Arithmetic Mean
0.083333333333333 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
12 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1991231055 can be divided by 12 positive divisors.
The sum of these divisors (counting 1991231055) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1110110101011111100011001001111
3
Ternary
12010202212000111100
4
Quaternary
1312223330121033
5
Quinary
13034223343210
6
Senary
525330554143
8
Octal
16653743117
10
Decimal
1991231055
12
Duodecimal
476a38953
16
Hexadecimal
76afc64f
20
Vigesimal
1b253hcf
36
Base36
wxizpr
md5
86afa1e1762c7611f14c3d34ae33df63
sha1
e264bdaced152c78302bde735828bddeb858c79d
sha256
a9bbf039357653b471c47f51712df9e652c885244ebb930b73b428a8d3497f29
sha512
48c9f625e9366750c3c9b493be04ea51ec05011ee4b3e962a8107e6985276d7f317120b1366c716304334b0282fb0adce1f9964fa9d6fc90d18bc7fd47406ee2
ripemd-160
1323bfde88ddb0bf6d2a025d74072d544f2b5f1c
Diameter
3982462110
Circumference
12511273707.976
Area
1.2456418372463E+19
Volume
3.3071476129761E+28
Surface area
4.9825673489852E+19
Circumference
12511273707.976
Perimeter
7964924220
Area
3965001114396413025
Diagonal
2816025963.7995
Surface area
2.3790006686378E+19
Volume
7.8952333520957E+27
Space diagonal
3448913356.869
Perimeter
5973693165
Area
1.7168958455505E+18
Altitude
1724456678.4345
Surface area
1.7168958455505E+18
Volume
9.3046217371952E+26
Height
938675321.2665