13215332313 has 12 divisors (see below), whose sum is σ = 20211684948. Its totient is φ = 8291973120.

The previous prime is 13215332309. The next prime is 13215332327. The reversal of 13215332313 is 31323351231.

13215332313 is a `hidden beast` number, since 1 + 3 + 2 + 15 + 332 + 313 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5257265049 + 7958067264 = 72507^2 + 89208^2 .

It is not a de Polignac number, because 13215332313 - 2² = 13215332309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13215332303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43187208 + ... + 43187513.

It is an arithmetic number, because the mean of its divisors is an integer number (1684307079).

Almost surely, 2^13215332313 is an apocalyptic number.

It is an amenable number.

13215332313 is a deficient number, since it is larger than the sum of its proper divisors (6996352635).

13215332313 is a wasteful number, since it uses less digits than its factorization.

13215332313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86374744 (or 86374741 counting only the distinct ones).

The product of its digits is 4860, while the sum is 27.

Adding to 13215332313 its reverse (31323351231), we get a palindrome (44538683544).

The spelling of 13215332313 in words is "thirteen billion, two hundred fifteen million, three hundred thirty-two thousand, three hundred thirteen".