231268388 has 72 divisors (see below), whose sum is σ = 464849280. Its totient is φ = 100464000.

The previous prime is 231268363. The next prime is 231268393. The reversal of 231268388 is 883862132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 921263 + ... + 921513.

It is an arithmetic number, because the mean of its divisors is an integer number (6456240).

Almost surely, 2^231268388 is an apocalyptic number.

It is an amenable number.

231268388 is an abundant number, since it is smaller than the sum of its proper divisors (233580892).

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

231268388 is a wasteful number, since it uses less digits than its factorization.

231268388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 342 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 231268388 is about 15207.5109074431. The cubic root of 231268388 is about 613.8167815857.

The spelling of 231268388 in words is "two hundred thirty-one million, two hundred sixty-eight thousand, three hundred eighty-eight".