13231264 has 12 divisors (see below), whose sum is σ = 26049114. Its totient is φ = 6615616.

The previous prime is 13231261. The next prime is 13231289. The reversal of 13231264 is 46213231.

It can be written as a sum of positive squares in only one way, i.e., 10368400 + 2862864 = 3220^2 + 1692^2 .

It is not an unprimeable number, because it can be changed into a prime (13231261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206707 + ... + 206770.

Almost surely, 2^13231264 is an apocalyptic number.

It is an amenable number.

13231264 is a deficient number, since it is larger than the sum of its proper divisors (12817850).

13231264 is an equidigital number, since it uses as much as digits as its factorization.

13231264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413487 (or 413479 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 13231264 is about 3637.4804466828. The cubic root of 13231264 is about 236.5195868084.

Adding to 13231264 its reverse (46213231), we get a palindrome (59444495).

The spelling of 13231264 in words is "thirteen million, two hundred thirty-one thousand, two hundred sixty-four".