231148188 has 48 divisors (see below), whose sum is σ = 600687360. Its totient is φ = 76867632.

The previous prime is 231148163. The next prime is 231148217. The reversal of 231148188 is 881841132.

231148188 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48145 + ... + 52727.

It is an arithmetic number, because the mean of its divisors is an integer number (12514320).

Almost surely, 2^231148188 is an apocalyptic number.

It is an amenable number.

231148188 is an abundant number, since it is smaller than the sum of its proper divisors (369539172).

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

231148188 is a wasteful number, since it uses less digits than its factorization.

231148188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063 (or 5055 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 231148188 is about 15203.5583992696. The cubic root of 231148188 is about 613.7104209430.

The spelling of 231148188 in words is "two hundred thirty-one million, one hundred forty-eight thousand, one hundred eighty-eight".