91991031 is an odd 8-digits composite number following 91991030
and preceding 91991032 . In scientific notation, it is written as 9.1991031 × 10^7.
The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors.
There are 55610720 positive integers (up to 91991031) that are relatively prime to 91991031.
91991031 has 16 divisors, whose sum is 134144640
The reverse of 91991031 is 13019919
Previous prime number is 419
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
ninety-one million nine hundred ninety-one thousand thirty-one
Scientific notation
9.1991031 × 10^7
Engineering notation
9.1991031 × 10^6
Prime Factorization
3 × 11 × 419 × 6653
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
91991031
Product of the distinct prime numbers
The prime factorization of 91991031 is 3 × 11 × 419 × 6653.
Since it has a total of 4 prime factors.
1 , 6 , 3 , 25 , 797 , 133 , 4665 , 4464 , 87649 , 99810 , 526434 , 421509 , 5695337 , 110778 , 99530958 , 95651924 , 460220121 , 19242891 , 4931059197 , 1270957511
n×2
183982062
n×3
275973093
n×4
367964124
n×5
459955155
n÷2
45995515.5
n÷3
30663677
n÷3
22997757.75
n÷5
18398206.2
n2
8462349784442961
n3
7.7846028135354E+23
n4
7.1611363874262E+31
n5
6.5876031941095E+39
2 √n
9591.1954937849
3 √n
451.42107304462
4 √n
97.934649097165
5 √n
39.151562342824
1 , 3 , 11 , 33 , 419 , 1257 , 4609 , 6653 , 13827 , 19959 , 73183 , 219549 , 2787607 , 8362821 , 30663677 , 91991031
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
-91991030
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 91991031 can be divided by 16 positive divisors.
The sum of these divisors (counting 91991031) is 1, the average is 0.0625.
Base
System
Value
2
Binary
101011110111010101111110111
3
Ternary
20102002121222020
4
Quaternary
11132322233313
5
Quinary
142022203111
6
Senary
13043404223
8
Octal
536725767
10
Decimal
91991031
12
Duodecimal
26983673
16
Hexadecimal
57babf7
20
Vigesimal
18eihbb
36
Base36
1iroqf
md5
f1742e88bea0977a9d80288157e53a81
sha1
fbc85806262f22a10f14d3e7cbeea80d610f9cec
sha256
db19258aef18ccde09a636bb848c8553d202b4bf4de5e42616cdf0c9a88b658d
sha512
7783cdce54b74cfd88346c3d8bfa1359533aea1dec8931a1b8784ba8ae9809185b49ca2c95847e7857dc9521d7c02e9a4c8f41a9051fa636c41b761e4ddbe48a
ripemd-160
29361b5bc0bbb4f2739bddf1ddbccbf2147557f7
Diameter
183982062
Circumference
577996694.3715
Area
2.6585255914913E+16
Volume
3.2608068013489E+24
Surface area
1.0634102365965E+17
Circumference
577996694.3715
Perimeter
367964124
Area
8462349784442961
Diagonal
130094963.65688
Surface area
50774098706657766
Volume
7.7846028135354E+23
Space diagonal
159333139.53264
Perimeter
275973093
Area
3.6643049445187E+15
Altitude
79666569.766322
Surface area
3.6643049445187E+15
Volume
9.1742423971579E+22
Height
43364987.885628