13231232111 has 2 divisors, whose sum is σ = 13231232112. Its totient is φ = 13231232110.

The previous prime is 13231232083. The next prime is 13231232143. The reversal of 13231232111 is 11123213231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231232111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231232191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615616055 + 6615616056.

It is an arithmetic number, because the mean of its divisors is an integer number (6615616056).

Almost surely, 2^13231232111 is an apocalyptic number.

13231232111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231232111 is an equidigital number, since it uses as much as digits as its factorization.

13231232111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 20.

Adding to 13231232111 its reverse (11123213231), we get a palindrome (24354445342).

The spelling of 13231232111 in words is "thirteen billion, two hundred thirty-one million, two hundred thirty-two thousand, one hundred eleven".