231340988 has 12 divisors (see below), whose sum is σ = 405526800. Its totient is φ = 115476192.

The previous prime is 231340951. The next prime is 231340999. The reversal of 231340988 is 889043132.

It is a super-2 number, since 2×231340988² = 107037305457632288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45881 + ... + 50672.

It is an arithmetic number, because the mean of its divisors is an integer number (33793900).

Almost surely, 2^231340988 is an apocalyptic number.

It is an amenable number.

231340988 is a deficient number, since it is larger than the sum of its proper divisors (174185812).

231340988 is a wasteful number, since it uses less digits than its factorization.

231340988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97156 (or 97154 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 231340988 is about 15209.8976985383. The cubic root of 231340988 is about 613.8810048553.

The spelling of 231340988 in words is "two hundred thirty-one million, three hundred forty thousand, nine hundred eighty-eight".