230231999 has 4 divisors (see below), whose sum is σ = 233385936. Its totient is φ = 227078064.

The previous prime is 230231977. The next prime is 230232029. The reversal of 230231999 is 999132032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230231999 - 2¹⁶ = 230166463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230231929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1576859 + ... + 1577004.

It is an arithmetic number, because the mean of its divisors is an integer number (58346484).

Almost surely, 2^230231999 is an apocalyptic number.

230231999 is a deficient number, since it is larger than the sum of its proper divisors (3153937).

230231999 is an equidigital number, since it uses as much as digits as its factorization.

230231999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153936.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 230231999 is about 15173.3977407830. The cubic root of 230231999 is about 612.8985041845.

The spelling of 230231999 in words is "two hundred thirty million, two hundred thirty-one thousand, nine hundred ninety-nine".