13231111113231 has 32 divisors (see below), whose sum is σ = 19466123786496. Its totient is φ = 7927073280000.

The previous prime is 13231111113203. The next prime is 13231111113251.

13231111113231 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-13231111113231 is a prime.

It is a super-2 number, since 2×13231111113231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231111113251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 960061 + ... + 5232966.

It is an arithmetic number, because the mean of its divisors is an integer number (608316368328).

Almost surely, 2^{13231111113231} is an apocalyptic number.

13231111113231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13231111113231 is a deficient number, since it is larger than the sum of its proper divisors (6235012673265).

13231111113231 is a wasteful number, since it uses less digits than its factorization.

13231111113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193783.

The product of its digits is 324, while the sum is 24.

It can be divided in two parts, 1323111 and 1113231, that added together give a palindrome (2436342).

The spelling of 13231111113231 in words is "thirteen trillion, two hundred thirty-one billion, one hundred eleven million, one hundred thirteen thousand, two hundred thirty-one".