13232531 has 16 divisors (see below), whose sum is σ = 15136800. Its totient is φ = 11535264.

The previous prime is 13232507. The next prime is 13232537. The reversal of 13232531 is 13523231.

It is not a de Polignac number, because 13232531 - 2⁶ = 13232467 is a prime.

It is a super-2 number, since 2×13232531² = 350199753331922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13232537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41585 + ... + 41901.

It is an arithmetic number, because the mean of its divisors is an integer number (946050).

Almost surely, 2^13232531 is an apocalyptic number.

13232531 is a deficient number, since it is larger than the sum of its proper divisors (1904269).

13232531 is an equidigital number, since it uses as much as digits as its factorization.

13232531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 349 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 13232531 is about 3637.6546015255. The cubic root of 13232531 is about 236.5271361187.

Adding to 13232531 its reverse (13523231), we get a palindrome (26755762).

The spelling of 13232531 in words is "thirteen million, two hundred thirty-two thousand, five hundred thirty-one".