231255916 has 24 divisors (see below), whose sum is σ = 426746880. Its totient is φ = 109349712.

The previous prime is 231255911. The next prime is 231255923. The reversal of 231255916 is 619552132.

It is not an unprimeable number, because it can be changed into a prime (231255911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46821 + ... + 51523.

It is an arithmetic number, because the mean of its divisors is an integer number (17781120).

Almost surely, 2^231255916 is an apocalyptic number.

It is an amenable number.

231255916 is a deficient number, since it is larger than the sum of its proper divisors (195490964).

231255916 is a wasteful number, since it uses less digits than its factorization.

231255916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373 (or 5371 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 231255916 is about 15207.1008413833. The cubic root of 231255916 is about 613.8057472768.

The spelling of 231255916 in words is "two hundred thirty-one million, two hundred fifty-five thousand, nine hundred sixteen".