1991231061 is an odd 10-digits composite number following 1991231060
and preceding 1991231062 . In scientific notation, it is written as 1.991231061 × 10^9.
The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors.
There are 1299212528 positive integers (up to 1991231061) that are relatively prime to 1991231061.
1991231061 has 16 divisors, whose sum is 2711923200
The reverse of 1991231061 is 1601321991
Previous prime number is 227
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 33
Digital Root 6
Name
one billion nine hundred ninety-one million two hundred thirty-one thousand sixty-one
Scientific notation
1.991231061 × 10^9
Engineering notation
1.991231061 × 10^9
Prime Factorization
3 × 59 × 227 × 49559
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1991231061
Product of the distinct prime numbers
The prime factorization of 1991231061 is 3 × 59 × 227 × 49559.
Since it has a total of 4 prime factors.
9 , 9 , 21 , 43 , 775 , 843 , 1418 , 6991 , 61541 , 36664 , 787188 , 448144 , 9383383 , 6579687 , 29277283 , 6198380 , 1456367 , 382699253 , 1481109595 , 365505994
n×2
3982462122
n×3
5973693183
n×4
7964924244
n×5
9956155305
n÷2
995615530.5
n÷3
663743687
n÷3
497807765.25
n÷5
398246212.2
n2
3965001138291185721
n3
7.8952334234658E+27
n4
1.572123402665E+37
n5
3.1304609511116E+46
2 √n
44623.212132252
3 √n
1258.0769903838
4 √n
211.24206998667
5 √n
72.414299124214
1 , 3 , 59 , 177 , 227 , 681 , 13393 , 40179 , 49559 , 148677 , 2923981 , 8771943 , 11249893 , 33749679 , 663743687 , 1991231061
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1991231060
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1991231061 can be divided by 16 positive divisors.
The sum of these divisors (counting 1991231061) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1110110101011111100011001010101
3
Ternary
12010202212000111120
4
Quaternary
1312223330121111
5
Quinary
13034223343221
6
Senary
525330554153
8
Octal
16653743125
10
Decimal
1991231061
12
Duodecimal
476a38959
16
Hexadecimal
76afc655
20
Vigesimal
1b253hd1
36
Base36
wxizpx
md5
4aaebb6af95ebac318132c6f280bf8e4
sha1
bff8161f4095f7950ed25aed3b8079ae151c5368
sha256
cc922e16de5d5237c77334aaf582563a0e02f97a7cbe0b904c189b6574e6f197
sha512
de44e4b482f323878fb42b0d7616a4b30e5dabab8539b08195937f81c9a2429486ff453210d2472c94a56d13fa6f9adb57faad9afb372a2b810dd1972ccae5c0
ripemd-160
749f1dcd337247d36fdd05432a5c1ed4eddfc5b3
Diameter
3982462122
Circumference
12511273745.675
Area
1.2456418447531E+19
Volume
3.3071476428716E+28
Surface area
4.9825673790123E+19
Circumference
12511273745.675
Perimeter
7964924244
Area
3965001138291185721
Diagonal
2816025972.2848
Surface area
2.3790006829747E+19
Volume
7.8952334234658E+27
Space diagonal
3448913367.2613
Perimeter
5973693183
Area
1.7168958558972E+18
Altitude
1724456683.6306
Surface area
1.7168958558972E+18
Volume
9.3046218213055E+26
Height
938675324.09492