231342997 has 8 divisors (see below), whose sum is σ = 232546752. Its totient is φ = 230143200.

The previous prime is 231342989. The next prime is 231343037. The reversal of 231342997 is 799243132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231342997 - 2³ = 231342989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231342697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223872 + ... + 224902.

It is an arithmetic number, because the mean of its divisors is an integer number (29068344).

Almost surely, 2^231342997 is an apocalyptic number.

It is an amenable number.

231342997 is a deficient number, since it is larger than the sum of its proper divisors (1203755).

231342997 is a wasteful number, since it uses less digits than its factorization.

231342997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979.

The product of its digits is 81648, while the sum is 40.

The square root of 231342997 is about 15209.9637409167. The cubic root of 231342997 is about 613.8827818618.

The spelling of 231342997 in words is "two hundred thirty-one million, three hundred forty-two thousand, nine hundred ninety-seven".