232520513 has 2 divisors, whose sum is σ = 232520514. Its totient is φ = 232520512.

The previous prime is 232520503. The next prime is 232520531. The reversal of 232520513 is 315025232.

Together with next prime (232520531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207590464 + 24930049 = 14408^2 + 4993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232520513 is a prime.

It is not a weakly prime, because it can be changed into another prime (232520503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116260256 + 116260257.

It is an arithmetic number, because the mean of its divisors is an integer number (116260257).

Almost surely, 2^232520513 is an apocalyptic number.

It is an amenable number.

232520513 is a deficient number, since it is larger than the sum of its proper divisors (1).

232520513 is an equidigital number, since it uses as much as digits as its factorization.

232520513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 232520513 is about 15248.6233149094. The cubic root of 232520513 is about 614.9225566220.

Adding to 232520513 its reverse (315025232), we get a palindrome (547545745).

The spelling of 232520513 in words is "two hundred thirty-two million, five hundred twenty thousand, five hundred thirteen".