13231313311231 has 2 divisors, whose sum is σ = 13231313311232. Its totient is φ = 13231313311230.

The previous prime is 13231313311207. The next prime is 13231313311241. The reversal of 13231313311231 is 13211331313231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13231313311231 - 2¹⁷ = 13231313180159 is a prime.

It is a super-2 number, since 2×13231313311231² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13231313311231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231313311241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615656655615 + 6615656655616.

It is an arithmetic number, because the mean of its divisors is an integer number (6615656655616).

Almost surely, 2^{13231313311231} is an apocalyptic number.

13231313311231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231313311231 is an equidigital number, since it uses as much as digits as its factorization.

13231313311231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 28.

Adding to 13231313311231 its reverse (13211331313231), we get a palindrome (26442644624462).

The spelling of 13231313311231 in words is "thirteen trillion, two hundred thirty-one billion, three hundred thirteen million, three hundred eleven thousand, two hundred thirty-one".