11311981 is an odd 8-digits composite number following 11311980
and preceding 11311982 . In scientific notation, it is written as 1.1311981 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 11225500 positive integers (up to 11311981) that are relatively prime to 11311981.
11311981 has 4 divisors, whose sum is 11398464
The reverse of 11311981 is 18911311
Previous prime number is 131
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
eleven million three hundred eleven thousand nine hundred eighty-one
Scientific notation
1.1311981 × 10^7
Engineering notation
1.1311981 × 10^6
Prime Factorization
131 × 86351
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
11311981
Product of the distinct prime numbers
The prime factorization of 11311981 is 131 × 86351.
Since it has a total of 2 prime factors.
8 , 5 , 100 , 10 , 684 , 477 , 1626 , 9360 , 36991 , 48016 , 103059 , 625932 , 1101742 , 9765552 , 76699786 , 19891991 , 987854255 , 452937406 , 83005609 , 4324951203
n×2
22623962
n×3
33935943
n×4
45247924
n×5
56559905
n÷2
5655990.5
n÷3
3770660.3333333
n÷3
2827995.25
n÷5
2262396.2
n2
127960914144361
n3
1.4474914295436E+21
n4
1.6373995548661E+28
n5
1.8522232654053E+35
2 √n
3363.3288569511
3 √n
224.4809831065
4 √n
57.994213995459
5 √n
25.745879567175
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-11311980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 11311981 can be divided by 4 positive divisors.
The sum of these divisors (counting 11311981) is 1, the average is 0.25.
Base
System
Value
2
Binary
101011001001101101101101
3
Ternary
210021201010021
4
Quaternary
223021231231
5
Quinary
10343440411
6
Senary
1042242141
8
Octal
53115555
10
Decimal
11311981
12
Duodecimal
3956351
16
Hexadecimal
ac9b6d
20
Vigesimal
3adjj1
36
Base36
6qgdp
md5
5555edfd68ada1ac601b584dd87f55d6
sha1
7050763339ad22b26f9429ce42b0f17b64997889
sha256
92002bedd99a316b649496b677103934059265b2e5cafc48ee8f5f38e089013c
sha512
fd71385c5e0924c657ed35bb6cb76a98aadd138c7b0ab6a7ded86f42fde3244cdd12f3b3f5a9f3df5be30e97ea33a2edb5c6400a3e80df45253aaf46c1597385
ripemd-160
8c2090e47e7c46629a183a59d8a4693908727af3
Diameter
22623962
Circumference
71075272.814295
Area
4.0200106782256E+14
Volume
6.0632379215847E+21
Surface area
1.6080042712902E+15
Circumference
71075272.814295
Perimeter
45247924
Area
127960914144361
Diagonal
15997556.947507
Surface area
767765484866166
Volume
1.4474914295436E+21
Space diagonal
19592925.826254
Perimeter
33935943
Area
55408701170248
Altitude
9796462.9131269
Surface area
55408701170248
Volume
1.7058850092329E+20
Height
5332518.9825023