234531 has 24 divisors (see below), whose sum is σ = 389376. Its totient is φ = 134640.

The previous prime is 234529. The next prime is 234539. The reversal of 234531 is 135432.

It is not a de Polignac number, because 234531 - 2¹ = 234529 is a prime.

It is a super-2 number, since 2×234531² = 110009579922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2226 + ... + 2328.

It is an arithmetic number, because the mean of its divisors is an integer number (16224).

2²³⁴⁵³¹ is an apocalyptic number.

234531 is a deficient number, since it is larger than the sum of its proper divisors (154845).

234531 is a wasteful number, since it uses less digits than its factorization.

234531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 140 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 234531 is about 484.2840075823. The cubic root of 234531 is about 61.6689780807.

Adding to 234531 its reverse (135432), we get a palindrome (369963).

Subtracting from 234531 its reverse (135432), we obtain a palindrome (99099).

It can be divided in two parts, 23 and 4531, that added together give a palindrome (4554).

The spelling of 234531 in words is "two hundred thirty-four thousand, five hundred thirty-one".