231706664 has 16 divisors (see below), whose sum is σ = 496514400. Its totient is φ = 99302832.

The previous prime is 231706639. The next prime is 231706667. The reversal of 231706664 is 466607132.

It is not an unprimeable number, because it can be changed into a prime (231706667) 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 3 ways as a sum of consecutive naturals, for example, 2068754 + ... + 2068865.

It is an arithmetic number, because the mean of its divisors is an integer number (31032150).

Almost surely, 2^231706664 is an apocalyptic number.

It is an amenable number.

231706664 is an abundant number, since it is smaller than the sum of its proper divisors (264807736).

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

231706664 is a wasteful number, since it uses less digits than its factorization.

231706664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137632 (or 4137628 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 231706664 is about 15221.9139401062. The cubic root of 231706664 is about 614.2042843257.

The spelling of 231706664 in words is "two hundred thirty-one million, seven hundred six thousand, six hundred sixty-four".