230331388 has 48 divisors (see below), whose sum is σ = 468751360. Its totient is φ = 96997824.

The previous prime is 230331347. The next prime is 230331389. The reversal of 230331388 is 883133032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230331389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497245 + ... + 497707.

Almost surely, 2^230331388 is an apocalyptic number.

230331388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

230331388 is an abundant number, since it is smaller than the sum of its proper divisors (238419972).

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

230331388 is a wasteful number, since it uses less digits than its factorization.

230331388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 230331388 is about 15176.6724943250. The cubic root of 230331388 is about 612.9866856801.

The spelling of 230331388 in words is "two hundred thirty million, three hundred thirty-one thousand, three hundred eighty-eight".