13201431312512 has 32 divisors (see below), whose sum is σ = 26301869679900. Its totient is φ = 6600177745920.

The previous prime is 13201431312469. The next prime is 13201431312541. The reversal of 13201431312512 is 21521313410231.

It can be written as a sum of positive squares in 2 ways, for example, as 12807981222976 + 393450089536 = 3578824^2 + 627256^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 2623289 + ... + 5769272.

Almost surely, 2^{13201431312512} is an apocalyptic number.

It is an amenable number.

13201431312512 is a deficient number, since it is larger than the sum of its proper divisors (13100438367388).

13201431312512 is an equidigital number, since it uses as much as digits as its factorization.

13201431312512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8404864 (or 8404852 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 13201431312512 its reverse (21521313410231), we get a palindrome (34722744722743).

The spelling of 13201431312512 in words is "thirteen trillion, two hundred one billion, four hundred thirty-one million, three hundred twelve thousand, five hundred twelve".