13231137564233 has 2 divisors, whose sum is σ = 13231137564234. Its totient is φ = 13231137564232.

The previous prime is 13231137564217. The next prime is 13231137564257. The reversal of 13231137564233 is 33246573113231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8381505576889 + 4849631987344 = 2895083^2 + 2202188^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231137564233 - 2⁴ = 13231137564217 is a prime.

It is not a weakly prime, because it can be changed into another prime (13231137564433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615568782116 + 6615568782117.

It is an arithmetic number, because the mean of its divisors is an integer number (6615568782117).

Almost surely, 2^{13231137564233} is an apocalyptic number.

It is an amenable number.

13231137564233 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231137564233 is an equidigital number, since it uses as much as digits as its factorization.

13231137564233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 44.

The spelling of 13231137564233 in words is "thirteen trillion, two hundred thirty-one billion, one hundred thirty-seven million, five hundred sixty-four thousand, two hundred thirty-three".