13215631324 has 12 divisors (see below), whose sum is σ = 26431262704. Its totient is φ = 5663841984.

The previous prime is 13215631301. The next prime is 13215631333. The reversal of 13215631324 is 42313651231.

13215631324 is an admirable number.

It is a super-2 number, since 2×13215631324² (a number of 21 digits) 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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235993389 + ... + 235993444.

Almost surely, 2^13215631324 is an apocalyptic number.

13215631324 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13215631324 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13215631324 is a wasteful number, since it uses less digits than its factorization.

13215631324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471986844 (or 471986842 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The spelling of 13215631324 in words is "thirteen billion, two hundred fifteen million, six hundred thirty-one thousand, three hundred twenty-four".