113231112989 has 2 divisors, whose sum is σ = 113231112990. Its totient is φ = 113231112988.

The previous prime is 113231112961. The next prime is 113231113027. The reversal of 113231112989 is 989211132311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84013022500 + 29218090489 = 289850^2 + 170933^2 .

It is a cyclic number.

It is not a de Polignac number, because 113231112989 - 2²⁸ = 112962677533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113231112919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56615556494 + 56615556495.

It is an arithmetic number, because the mean of its divisors is an integer number (56615556495).

Almost surely, 2^113231112989 is an apocalyptic number.

It is an amenable number.

113231112989 is a deficient number, since it is larger than the sum of its proper divisors (1).

113231112989 is an equidigital number, since it uses as much as digits as its factorization.

113231112989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 41.

The spelling of 113231112989 in words is "one hundred thirteen billion, two hundred thirty-one million, one hundred twelve thousand, nine hundred eighty-nine".