231695916 has 24 divisors (see below), whose sum is σ = 548694720. Its totient is φ = 76078992.

The previous prime is 231695909. The next prime is 231695917. The reversal of 231695916 is 619596132.

It is not an unprimeable number, because it can be changed into a prime (231695917) 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, 143286 + ... + 144893.

It is an arithmetic number, because the mean of its divisors is an integer number (22862280).

Almost surely, 2^231695916 is an apocalyptic number.

It is an amenable number.

231695916 is an abundant number, since it is smaller than the sum of its proper divisors (316998804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231695916 is a wasteful number, since it uses less digits than its factorization.

231695916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288253 (or 288251 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 231695916 is about 15221.5608923658. The cubic root of 231695916 is about 614.1947873039.

The spelling of 231695916 in words is "two hundred thirty-one million, six hundred ninety-five thousand, nine hundred sixteen".