231304 has 16 divisors (see below), whose sum is σ = 449100. Its totient is φ = 111552.

The previous prime is 231299. The next prime is 231317. The reversal of 231304 is 403132.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 10404 = 470^2 + 102^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267 + ... + 730.

2²³¹³⁰⁴ is an apocalyptic number.

It is an amenable number.

231304 is a deficient number, since it is larger than the sum of its proper divisors (217796).

231304 is a wasteful number, since it uses less digits than its factorization.

231304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 231304 is about 480.9407447909. The cubic root of 231304 is about 61.3848286283.

Adding to 231304 its reverse (403132), we get a palindrome (634436).

It can be divided in two parts, 231 and 304, that added together give a palindrome (535).

The spelling of 231304 in words is "two hundred thirty-one thousand, three hundred four".