231615164 has 24 divisors (see below), whose sum is σ = 443232048. Its totient is φ = 105027840.

The previous prime is 231615151. The next prime is 231615169. The reversal of 231615164 is 461516132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231615169) 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, 12974 + ... + 25130.

It is an arithmetic number, because the mean of its divisors is an integer number (18468002).

Almost surely, 2^231615164 is an apocalyptic number.

It is an amenable number.

231615164 is a deficient number, since it is larger than the sum of its proper divisors (211616884).

231615164 is a wasteful number, since it uses less digits than its factorization.

231615164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12605 (or 12603 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 231615164 is about 15218.9081080083. The cubic root of 231615164 is about 614.1234247735.

The spelling of 231615164 in words is "two hundred thirty-one million, six hundred fifteen thousand, one hundred sixty-four".