31781138 (number)

31781138 is an even 8-digits composite number following 31781137 and preceding 31781139. In scientific notation, it is written as 3.1781138 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors. There are 15283920 positive integers (up to 31781138) that are relatively prime to 31781138.

Interesting facts

Basic properties

Name

Name thirty-one million seven hundred eighty-one thousand one hundred thirty-eight

Notation

Scientific notation 3.1781138 × 10^7
Engineering notation 3.1781138 × 10^6

Prime Factorization of 31781138

Prime Factorization 2 × 31 × 173 × 2963

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 31781138
Product of the distinct prime numbers

The prime factorization of 31781138 is 2 × 31 × 173 × 2963. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 9, 71, 80, 326, 626, 3660, 4465, 69306, 47746, 314427, 36331, 6843707, 1743673, 60283171, 75735032, 107000070, 213605102, 1833114222, 2860350597

Basic calculations (n = 31781138)

Multiplication

n×y
n×2 63562276
n×3 95343414
n×4 127124552
n×5 158905690

Division

n÷y
n÷2 15890569
n÷3 10593712.666667
n÷3 7945284.5
n÷5 6356227.6

Exponentiation

ny
n2 1010040732575044
n3 3.2100243907589E+22
n4 1.0201822814607E+30
n5 3.2422553872258E+37

Nth Root

y√n
2√n 5637.4762083755
3√n 316.75475862513
4√n 75.08312865335
5√n 31.65438562759

Divisors of 31781138

1, 2, 31, 62, 173, 346, 2963, 5363, 5926, 10726, 91853, 183706, 512599, 1025198, 15890569, 31781138

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 -31781137
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 31781138 can be divided by 16 positive divisors. The sum of these divisors (counting 31781138) is 1, the average is 0.0625.

Base conversion 31781138

Base System Value
2 Binary 1111001001111000100010010
3 Ternary 2012210122112012
4 Quaternary 1321033010102
5 Quinary 31113444023
6 Senary 3053102522
8 Octal 171170422
10 Decimal 31781138
12 Duodecimal a787a42
16 Hexadecimal 1e4f112
20 Vigesimal 9iccgi
36 Base36 ix6he

Cryptographic Hash Functions

md5 9ed3e81c2483298cddaff7a674e35b84
sha1 8aa88859f267998897e403160c2dd94caaa30c8e
sha256 8f21002fc3c37c3913e0318025abc29247db24bde3d2f5921f9d40fdee34278c
sha512 f0cdbbfac07ee37ff0047eba2ba49735931b2d96a5a9ff6ddc107a3d743945900a7613da402ff02d1dc92d6c1b7b8d12935655687bdf43679e33a59174dfe358
ripemd-160 a368032518e4631e8cf290c090f3d5d4dcd67083

31781138 as geometric shapes

Circle

Radius = n
Diameter 63562276
Circumference 199686779.32705
Area 3.1731365452842E+15

Sphere

Radius = n
Volume 1.3446118725136E+23
Surface area 1.2692546181137E+16
Circumference 199686779.32705

Square

Length = n
Perimeter 127124552
Area 1010040732575044
Diagonal 44945316.387251

Cube

Length = n
Surface area 6060244395450264
Volume 3.2100243907589E+22
Space diagonal 55046545.738358

Equilateral Triangle

Length = n
Perimeter 95343414
Area 4.3736046663352E+14
Altitude 27523272.869179

Triangular Pyramid

Length = n
Surface area 4.3736046663352E+14
Volume 3.783050024133E+21
Height 14981772.129084