1971 is an odd 4-digits composite number following 1970
and preceding 1972 . In scientific notation, it is written as 1.971 × 10^3.
The sum of its digits is 18. It has a total of 4 prime factors and 8 positive divisors.
There are 1296 positive integers (up to 1971) that are relatively prime to 1971.
1971 has 8 divisors, whose sum is 2960
The reverse of 1971 is 1791
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 4
Sum of Digits 18
Digital Root 9
Name
one thousand nine hundred seventy-one
Scientific notation
1.971 × 10^3
Engineering notation
1.971 × 10^3
Prime Factorization
3 × 73 × 3 × 3
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
219
Product of the distinct prime numbers
The prime factorization of 1971 is 3 × 73 × 3 × 3.
Since it has a total of 4 prime factors.
10 , 3 , 83 , 95 , 355 , 685 , 6794 , 1968 , 56698 , 62569 , 67585 , 292589 , 5814086 , 2362245 , 67034985 , 40335094 , 659710921 , 470962872 , 2104952581 , 5670818573
n×2
3942
n×3
5913
n×4
7884
n×5
9855
n÷2
985.5
n÷3
657
n÷3
492.75
n÷5
394.2
n2
3884841
n3
7657021611
n4
15091989595281
n5
29746311492298851
2 √n
44.395945760846
3 √n
12.538017589144
4 √n
6.6630282725534
5 √n
4.5597110779968
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
-1970
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 1971 can be divided by 8 positive divisors.
The sum of these divisors (counting 1971) is 1, the average is 0.125.
Base
System
Value
2
Binary
11110110011
3
Ternary
2201000
4
Quaternary
132303
5
Quinary
30341
6
Senary
13043
8
Octal
3663
10
Decimal
1971
12
Duodecimal
1183
16
Hexadecimal
7b3
20
Vigesimal
4ib
36
Base36
1ir
md5
de73998802680548b916f1947ffbad76
sha1
8336e40ea16b97a960be85fc496a66921cd296cc
sha256
2b5d2ba5803e6fe3a2bc08b5f3965f47a92918a9c44b8090618d5d5a2876cf8c
sha512
315ace935f8a5803dcb69e034c623da5a95b0e0fa8275c7be6965bcc776a5f8128a477adb8af1e1d5db7f75a93cd3f2c908b2daef2533105fe6dd54915868f1a
ripemd-160
2a29f3ea6c95b781cffe2993e30633f7aaa7bc3b
Diameter
3942
Circumference
12384.158240451
Area
12204587.945964
Volume
32073657121.995
Surface area
48818351.783858
Circumference
12384.158240451
Perimeter
7884
Area
3884841
Diagonal
2787.4149314374
Surface area
23309046
Volume
7657021611
Space diagonal
3413.8721417183
Perimeter
5913
Area
1682185.4978317
Altitude
1706.9360708591
Surface area
1682185.4978317
Volume
902388650.80501
Height
929.13831047912