230431988 has 6 divisors (see below), whose sum is σ = 403255986. Its totient is φ = 115215992.

The previous prime is 230431933. The next prime is 230431997. The reversal of 230431988 is 889134032.

It can be written as a sum of positive squares in only one way, i.e., 215854864 + 14577124 = 14692^2 + 3818^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28803995 + ... + 28804002.

It is an arithmetic number, because the mean of its divisors is an integer number (67209331).

Almost surely, 2^230431988 is an apocalyptic number.

It is an amenable number.

230431988 is a deficient number, since it is larger than the sum of its proper divisors (172823998).

230431988 is a wasteful number, since it uses less digits than its factorization.

230431988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57608001 (or 57607999 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 230431988 is about 15179.9864295065. The cubic root of 230431988 is about 613.0759157896.

The spelling of 230431988 in words is "two hundred thirty million, four hundred thirty-one thousand, nine hundred eighty-eight".