13031231021113 has 2 divisors, whose sum is σ = 13031231021114. Its totient is φ = 13031231021112.

The previous prime is 13031231021071. The next prime is 13031231021161. The reversal of 13031231021113 is 31112013213031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11873558314809 + 1157672706304 = 3445803^2 + 1075952^2 .

It is a cyclic number.

It is not a de Polignac number, because 13031231021113 - 2²⁵ = 13031197466681 is a prime.

It is not a weakly prime, because it can be changed into another prime (13031231021173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515615510556 + 6515615510557.

It is an arithmetic number, because the mean of its divisors is an integer number (6515615510557).

Almost surely, 2^{13031231021113} is an apocalyptic number.

It is an amenable number.

13031231021113 is a deficient number, since it is larger than the sum of its proper divisors (1).

13031231021113 is an equidigital number, since it uses as much as digits as its factorization.

13031231021113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 13031231021113 its reverse (31112013213031), we get a palindrome (44143244234144).

The spelling of 13031231021113 in words is "thirteen trillion, thirty-one billion, two hundred thirty-one million, twenty-one thousand, one hundred thirteen".