13231210312 has 8 divisors (see below), whose sum is σ = 24808519350. Its totient is φ = 6615605152.

The previous prime is 13231210309. The next prime is 13231210403. The reversal of 13231210312 is 21301213231.

It can be written as a sum of positive squares in only one way, i.e., 11844839556 + 1386370756 = 108834^2 + 37234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 13231210312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826950637 + ... + 826950652.

Almost surely, 2^13231210312 is an apocalyptic number.

It is an amenable number.

13231210312 is a deficient number, since it is larger than the sum of its proper divisors (11577309038).

13231210312 is a wasteful number, since it uses less digits than its factorization.

13231210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653901295 (or 1653901291 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13231210312 its reverse (21301213231), we get a palindrome (34532423543).

The spelling of 13231210312 in words is "thirteen billion, two hundred thirty-one million, two hundred ten thousand, three hundred twelve".