512520135231 has 32 divisors (see below), whose sum is σ = 740970961920. Its totient is φ = 313236000000.

The previous prime is 512520135203. The next prime is 512520135293. The reversal of 512520135231 is 132531025215.

It is a de Polignac number, because none of the positive numbers 2^k-512520135231 is a prime.

It is a super-2 number, since 2×512520135231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512520135931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37264606 + ... + 37278356.

It is an arithmetic number, because the mean of its divisors is an integer number (23155342560).

Almost surely, 2^512520135231 is an apocalyptic number.

512520135231 is a deficient number, since it is larger than the sum of its proper divisors (228450826689).

512520135231 is a wasteful number, since it uses less digits than its factorization.

512520135231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20247.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 512520135231 in words is "five hundred twelve billion, five hundred twenty million, one hundred thirty-five thousand, two hundred thirty-one".