Base | Representation |
---|---|
bin | 1111101010010… |
… | …11111100100111 |
3 | 100011012221200222 |
4 | 13311023330213 |
5 | 232113224304 |
6 | 21011554555 |
7 | 3153511022 |
oct | 765137447 |
9 | 304187628 |
10 | 131383079 |
11 | 68187063 |
12 | 37bbba5b |
13 | 212b1189 |
14 | 136401b9 |
15 | b8034be |
hex | 7d4bf27 |
131383079 has 4 divisors (see below), whose sum is σ = 135913560. Its totient is φ = 126852600.
The previous prime is 131383069. The next prime is 131383093. The reversal of 131383079 is 970383131.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970383131 = 19991 ⋅48541.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-131383079 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131383069) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2265197 + ... + 2265254.
It is an arithmetic number, because the mean of its divisors is an integer number (33978390).
Almost surely, 2131383079 is an apocalyptic number.
131383079 is a deficient number, since it is larger than the sum of its proper divisors (4530481).
131383079 is an equidigital number, since it uses as much as digits as its factorization.
131383079 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4530480.
The product of its (nonzero) digits is 13608, while the sum is 35.
The square root of 131383079 is about 11462.2458096134. The cubic root of 131383079 is about 508.3698804026.
The spelling of 131383079 in words is "one hundred thirty-one million, three hundred eighty-three thousand, seventy-nine".
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