231112997 has 2 divisors, whose sum is σ = 231112998. Its totient is φ = 231112996.

The previous prime is 231112991. The next prime is 231113033. The reversal of 231112997 is 799211132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120253156 + 110859841 = 10966^2 + 10529^2 .

It is a cyclic number.

It is not a de Polignac number, because 231112997 - 2¹² = 231108901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231112991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115556498 + 115556499.

It is an arithmetic number, because the mean of its divisors is an integer number (115556499).

Almost surely, 2^231112997 is an apocalyptic number.

It is an amenable number.

231112997 is a deficient number, since it is larger than the sum of its proper divisors (1).

231112997 is an equidigital number, since it uses as much as digits as its factorization.

231112997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 35.

The square root of 231112997 is about 15202.4010274693. The cubic root of 231112997 is about 613.6792747193.

The spelling of 231112997 in words is "two hundred thirty-one million, one hundred twelve thousand, nine hundred ninety-seven".