13233131 has 4 divisors (see below), whose sum is σ = 13361712. Its totient is φ = 13104552.

The previous prime is 13233127. The next prime is 13233149. The reversal of 13233131 is 13133231.

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 13233131 - 2² = 13233127 is a prime.

It is a super-2 number, since 2×13233131² = 350231512126322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13233331) 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, 64136 + ... + 64341.

It is an arithmetic number, because the mean of its divisors is an integer number (3340428).

Almost surely, 2^13233131 is an apocalyptic number.

13233131 is a deficient number, since it is larger than the sum of its proper divisors (128581).

13233131 is a wasteful number, since it uses less digits than its factorization.

13233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128580.

The product of its digits is 162, while the sum is 17.

The square root of 13233131 is about 3637.7370713123. The cubic root of 13233131 is about 236.5307109988.

Adding to 13233131 its reverse (13133231), we get a palindrome (26366362).

The spelling of 13233131 in words is "thirteen million, two hundred thirty-three thousand, one hundred thirty-one".