13231313312 has 48 divisors (see below), whose sum is σ = 29813277312. Its totient is φ = 5662406400.

The previous prime is 13231313269. The next prime is 13231313321. The reversal of 13231313312 is 21331313231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114893 + ... + 199155.

It is an arithmetic number, because the mean of its divisors is an integer number (621109944).

Almost surely, 2^13231313312 is an apocalyptic number.

It is an amenable number.

13231313312 is an abundant number, since it is smaller than the sum of its proper divisors (16581964000).

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

13231313312 is an equidigital number, since it uses as much as digits as its factorization.

13231313312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84981 (or 84973 counting only the distinct ones).

The product of its digits is 972, while the sum is 23.

Adding to 13231313312 its reverse (21331313231), we get a palindrome (34562626543).

The spelling of 13231313312 in words is "thirteen billion, two hundred thirty-one million, three hundred thirteen thousand, three hundred twelve".