230331 has 4 divisors (see below), whose sum is σ = 307112. Its totient is φ = 153552.

The previous prime is 230327. The next prime is 230339. The reversal of 230331 is 133032.

It is a happy number.

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

It is not a de Polignac number, because 230331 - 2² = 230327 is a prime.

It is a super-2 number, since 2×230331² = 106104739122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230339) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 38386 + ... + 38391.

It is an arithmetic number, because the mean of its divisors is an integer number (76778).

2²³⁰³³¹ is an apocalyptic number.

230331 is a deficient number, since it is larger than the sum of its proper divisors (76781).

230331 is an equidigital number, since it uses as much as digits as its factorization.

230331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76780.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 230331 is about 479.9281196179. The cubic root of 230331 is about 61.2986341482.

Adding to 230331 its reverse (133032), we get a palindrome (363363).

It can be divided in two parts, 230 and 331, that added together give a triangular number (561 = T₃₃).

The spelling of 230331 in words is "two hundred thirty thousand, three hundred thirty-one".