Base | Representation |
---|---|
bin | 1111101001100… |
… | …11101101010001 |
3 | 100011000220111201 |
4 | 13310303231101 |
5 | 232102040133 |
6 | 21005511201 |
7 | 3152615404 |
oct | 764635521 |
9 | 304026451 |
10 | 131283793 |
11 | 68119503 |
12 | 37b72501 |
13 | 21277c24 |
14 | 13615d3b |
15 | b7d3d7d |
hex | 7d33b51 |
131283793 has 8 divisors (see below), whose sum is σ = 137543616. Its totient is φ = 125070000.
The previous prime is 131283767. The next prime is 131283797. The reversal of 131283793 is 397382131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 131283793 - 29 = 131283281 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (131283797) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5598 + ... + 17143.
It is an arithmetic number, because the mean of its divisors is an integer number (17192952).
Almost surely, 2131283793 is an apocalyptic number.
It is an amenable number.
131283793 is a deficient number, since it is larger than the sum of its proper divisors (6259823).
131283793 is a wasteful number, since it uses less digits than its factorization.
131283793 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23015.
The product of its digits is 27216, while the sum is 37.
The square root of 131283793 is about 11457.9139899024. The cubic root of 131283793 is about 508.2417900071.
The spelling of 131283793 in words is "one hundred thirty-one million, two hundred eighty-three thousand, seven hundred ninety-three".
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