13515231324 has 48 divisors (see below), whose sum is σ = 37203224576. Its totient is φ = 3736929600.

The previous prime is 13515231287. The next prime is 13515231329. The reversal of 13515231324 is 42313251531.

It is a super-2 number, since 2×13515231324² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13515231291 and 13515231300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13515231329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2592487 + ... + 2597694.

Almost surely, 2^13515231324 is an apocalyptic number.

13515231324 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13515231324 is an abundant number, since it is smaller than the sum of its proper divisors (23687993252).

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

13515231324 is a wasteful number, since it uses less digits than its factorization.

13515231324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5190226 (or 5190224 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

Adding to 13515231324 its reverse (42313251531), we get a palindrome (55828482855).

The spelling of 13515231324 in words is "thirteen billion, five hundred fifteen million, two hundred thirty-one thousand, three hundred twenty-four".