230431989 has 8 divisors (see below), whose sum is σ = 307312992. Its totient is φ = 153586160.

The previous prime is 230431933. The next prime is 230431997. The reversal of 230431989 is 989134032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230431989 - 2¹² = 230427893 is a prime.

It is a super-2 number, since 2×230431989² = 106197803108992242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230431919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19534 + ... + 29024.

It is an arithmetic number, because the mean of its divisors is an integer number (38414124).

Almost surely, 2^230431989 is an apocalyptic number.

It is an amenable number.

230431989 is a deficient number, since it is larger than the sum of its proper divisors (76881003).

230431989 is an equidigital number, since it uses as much as digits as its factorization.

230431989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17587.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 230431989 is about 15179.9864624446. The cubic root of 230431989 is about 613.0759166764.

The spelling of 230431989 in words is "two hundred thirty million, four hundred thirty-one thousand, nine hundred eighty-nine".