13213233 has 32 divisors (see below), whose sum is σ = 22619520. Its totient is φ = 7534080.

The previous prime is 13213231. The next prime is 13213237. The reversal of 13213233 is 33231231.

13213233 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13213233 - 2¹ = 13213231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13213231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3741 + ... + 6357.

It is an arithmetic number, because the mean of its divisors is an integer number (706860).

Almost surely, 2^13213233 is an apocalyptic number.

It is an amenable number.

13213233 is a deficient number, since it is larger than the sum of its proper divisors (9406287).

13213233 is a wasteful number, since it uses less digits than its factorization.

13213233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654 (or 2648 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 13213233 is about 3635.0011004125. The cubic root of 13213233 is about 236.4120983785.

Adding to 13213233 its reverse (33231231), we get a palindrome (46444464).

It can be divided in two parts, 1321 and 3233, that added together give a palindrome (4554).

The spelling of 13213233 in words is "thirteen million, two hundred thirteen thousand, two hundred thirty-three".