13231684 has 12 divisors (see below), whose sum is σ = 23720508. Its totient is φ = 6454400.

The previous prime is 13231679. The next prime is 13231703. The reversal of 13231684 is 48613231.

It can be written as a sum of positive squares in 2 ways, for example, as 7840000 + 5391684 = 2800^2 + 2322^2 .

It is a super-2 number, since 2×13231684² = 350154922951712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40177 + ... + 40504.

It is an arithmetic number, because the mean of its divisors is an integer number (1976709).

Almost surely, 2^13231684 is an apocalyptic number.

It is an amenable number.

13231684 is a deficient number, since it is larger than the sum of its proper divisors (10488824).

13231684 is a wasteful number, since it uses less digits than its factorization.

13231684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80726 (or 80724 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 13231684 is about 3637.5381784938. The cubic root of 13231684 is about 236.5220893956.

The spelling of 13231684 in words is "thirteen million, two hundred thirty-one thousand, six hundred eighty-four".