13023231 has 8 divisors (see below), whose sum is σ = 18700080. Its totient is φ = 8014272.

The previous prime is 13023203. The next prime is 13023251. The reversal of 13023231 is 13232031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13023231 - 2⁶ = 13023167 is a prime.

It is a super-2 number, since 2×13023231² = 339209091358722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13023231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166926 + ... + 167003.

It is an arithmetic number, because the mean of its divisors is an integer number (2337510).

Almost surely, 2^13023231 is an apocalyptic number.

13023231 is a deficient number, since it is larger than the sum of its proper divisors (5676849).

13023231 is a wasteful number, since it uses less digits than its factorization.

13023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333945.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13023231 is about 3608.7713975812. The cubic root of 13023231 is about 235.2734465946.

Adding to 13023231 its reverse (13232031), we get a palindrome (26255262).

The spelling of 13023231 in words is "thirteen million, twenty-three thousand, two hundred thirty-one".