13232509 has 4 divisors (see below), whose sum is σ = 13255200. Its totient is φ = 13209820.

The previous prime is 13232507. The next prime is 13232537. The reversal of 13232509 is 90523231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90523231 = 67 ⋅1351093.

It is a cyclic number.

It is not a de Polignac number, because 13232509 - 2¹ = 13232507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13232501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10447 + ... + 11644.

It is an arithmetic number, because the mean of its divisors is an integer number (3313800).

Almost surely, 2^13232509 is an apocalyptic number.

It is an amenable number.

13232509 is a deficient number, since it is larger than the sum of its proper divisors (22691).

13232509 is an equidigital number, since it uses as much as digits as its factorization.

13232509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22690.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 13232509 is about 3637.6515775978. The cubic root of 13232509 is about 236.5270050377.

The spelling of 13232509 in words is "thirteen million, two hundred thirty-two thousand, five hundred nine".