231252513 has 16 divisors (see below), whose sum is σ = 330612480. Its totient is φ = 143260416.

The previous prime is 231252499. The next prime is 231252533. The reversal of 231252513 is 315252132.

It is a happy number.

It is not a de Polignac number, because 231252513 - 2²⁶ = 164143649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231252533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24670 + ... + 32727.

It is an arithmetic number, because the mean of its divisors is an integer number (20663280).

Almost surely, 2^231252513 is an apocalyptic number.

It is an amenable number.

231252513 is a deficient number, since it is larger than the sum of its proper divisors (99359967).

231252513 is a wasteful number, since it uses less digits than its factorization.

231252513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57496.

The product of its digits is 1800, while the sum is 24.

The square root of 231252513 is about 15206.9889524521. The cubic root of 231252513 is about 613.8027364836.

The spelling of 231252513 in words is "two hundred thirty-one million, two hundred fifty-two thousand, five hundred thirteen".