13033231 has 4 divisors (see below), whose sum is σ = 13057864. Its totient is φ = 13008600.

The previous prime is 13033193. The next prime is 13033261. The reversal of 13033231 is 13233031.

13033231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13033231 - 2⁷ = 13033103 is a prime.

It is a super-2 number, since 2×13033231² = 339730220598722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13033261) 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, 11505 + ... + 12586.

It is an arithmetic number, because the mean of its divisors is an integer number (3264466).

Almost surely, 2^13033231 is an apocalyptic number.

13033231 is a deficient number, since it is larger than the sum of its proper divisors (24633).

13033231 is an equidigital number, since it uses as much as digits as its factorization.

13033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24632.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 13033231 is about 3610.1566448009. The cubic root of 13033231 is about 235.3336501015. Note that the first 3 decimals are identical.

Adding to 13033231 its reverse (13233031), we get a palindrome (26266262).

The spelling of 13033231 in words is "thirteen million, thirty-three thousand, two hundred thirty-one".