13121431324 has 12 divisors (see below), whose sum is σ = 22964361784. Its totient is φ = 6560185104.

The previous prime is 13121431313. The next prime is 13121431343. The reversal of 13121431324 is 42313412131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74127 + ... + 178150.

Almost surely, 2^13121431324 is an apocalyptic number.

It is an amenable number.

13121431324 is a deficient number, since it is larger than the sum of its proper divisors (9842930460).

13121431324 is a wasteful number, since it uses less digits than its factorization.

13121431324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265284 (or 265282 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 13121431324 its reverse (42313412131), we get a palindrome (55434843455).

The spelling of 13121431324 in words is "thirteen billion, one hundred twenty-one million, four hundred thirty-one thousand, three hundred twenty-four".