230831 has 4 divisors (see below), whose sum is σ = 243000. Its totient is φ = 218664.

The previous prime is 230827. The next prime is 230833. The reversal of 230831 is 138032.

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 230831 - 2² = 230827 is a prime.

It is a super-2 number, since 2×230831² = 106565901122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230833) 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, 6056 + ... + 6093.

It is an arithmetic number, because the mean of its divisors is an integer number (60750).

2²³⁰⁸³¹ is an apocalyptic number.

230831 is a deficient number, since it is larger than the sum of its proper divisors (12169).

230831 is a wasteful number, since it uses less digits than its factorization.

230831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12168.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 230831 is about 480.4487485674. The cubic root of 230831 is about 61.3429575582.

Adding to 230831 its reverse (138032), we get a palindrome (368863).

The spelling of 230831 in words is "two hundred thirty thousand, eight hundred thirty-one".