513165231 has 12 divisors (see below), whose sum is σ = 743179008. Its totient is φ = 341214624.

The previous prime is 513165203. The next prime is 513165251. The reversal of 513165231 is 132561315.

513165231 is a `hidden beast` number, since 5 + 1 + 3 + 1 + 652 + 3 + 1 = 666.

It is not a de Polignac number, because 513165231 - 2⁵ = 513165199 is a prime.

It is a super-2 number, since 2×513165231² = 526677108614566722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 513165195 and 513165204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513165251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70990 + ... + 77883.

It is an arithmetic number, because the mean of its divisors is an integer number (61931584).

Almost surely, 2^513165231 is an apocalyptic number.

513165231 is a deficient number, since it is larger than the sum of its proper divisors (230013777).

513165231 is a wasteful number, since it uses less digits than its factorization.

513165231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149262 (or 149259 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 513165231 is about 22653.1505755822. The cubic root of 513165231 is about 800.6064313310.

The spelling of 513165231 in words is "five hundred thirteen million, one hundred sixty-five thousand, two hundred thirty-one".