91991431 is an odd 8-digits composite number following 91991430
and preceding 91991432 . In scientific notation, it is written as 9.1991431 × 10^7.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 78112248 positive integers (up to 91991431) that are relatively prime to 91991431.
91991431 has 8 divisors, whose sum is 106116480
The reverse of 91991431 is 13419919
Previous prime number is 107
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
ninety-one million nine hundred ninety-one thousand four hundred thirty-one
Scientific notation
9.1991431 × 10^7
Engineering notation
9.1991431 × 10^6
Prime Factorization
7 × 107 × 122819
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
91991431
Product of the distinct prime numbers
The prime factorization of 91991431 is 7 × 107 × 122819.
Since it has a total of 3 prime factors.
7 , 2 , 10 , 19 , 348 , 554 , 4001 , 549 , 50260 , 62086 , 549212 , 358442 , 460339 , 353627 , 84449921 , 64734064 , 551381039 , 231286040 , 2575177456 , 3800468386
n×2
183982862
n×3
275974293
n×4
367965724
n×5
459957155
n÷2
45995715.5
n÷3
30663810.333333
n÷3
22997857.75
n÷5
18398286.2
n2
8462423377427761
n3
7.7847043621743E+23
n4
7.1612609418836E+31
n5
6.5877464180828E+39
2 √n
9591.2163462201
3 √n
451.4217273409
4 √n
97.934755558076
5 √n
39.151596390921
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
-91991430
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 91991431 can be divided by 8 positive divisors.
The sum of these divisors (counting 91991431) is 1, the average is 0.125.
Base
System
Value
2
Binary
101011110111010110110000111
3
Ternary
20102002122112001
4
Quaternary
11132322312013
5
Quinary
142022211211
6
Senary
13043410131
8
Octal
536726607
10
Decimal
91991431
12
Duodecimal
26983947
16
Hexadecimal
57bad87
20
Vigesimal
18eiibb
36
Base36
1irp1j
md5
c8c7ec7359b315f3beb01b9915eccce5
sha1
73760fa250ae52281f9b54bf9466e6732e15fd46
sha256
80f8d016dabdae7c9fa33d66e973430215d0439a587a1259a32f9f6f3a5923af
sha512
3047f521923e2976a9efced7083a26fa91bb8cf8f7cbff9925c442d3b04518cfb11c442a15c7a18b330e98e0489f7feb2afad15ed593278c3158a66b2f98aa69
ripemd-160
2b58a7eaa51fde15777c7459b5da86d911df7213
Diameter
183982862
Circumference
577999207.64562
Area
2.6585487114094E+16
Volume
3.2608493379434E+24
Surface area
1.0634194845637E+17
Circumference
577999207.64562
Perimeter
367965724
Area
8462423377427761
Diagonal
130095529.34231
Surface area
50774540264566566
Volume
7.7847043621743E+23
Space diagonal
159333832.35297
Perimeter
275974293
Area
3.6643368112159E+15
Altitude
79666916.176483
Surface area
3.6643368112159E+15
Volume
9.1743620733766E+22
Height
43365176.447436