13531121424 has 60 divisors (see below), whose sum is σ = 37905212800. Its totient is φ = 4505982912.

The previous prime is 13531121413. The next prime is 13531121503. The reversal of 13531121424 is 42412113531.

13531121424 is a `hidden beast` number, since 1 + 3 + 531 + 121 + 4 + 2 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104397 + ... + 194835.

Almost surely, 2^13531121424 is an apocalyptic number.

It is an amenable number.

13531121424 is an abundant number, since it is smaller than the sum of its proper divisors (24374091376).

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

13531121424 is a wasteful number, since it uses less digits than its factorization.

13531121424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91492 (or 91483 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 13531121424 its reverse (42412113531), we get a palindrome (55943234955).

The spelling of 13531121424 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-one thousand, four hundred twenty-four".