231284 has 12 divisors (see below), whose sum is σ = 411264. Its totient is φ = 113784.

The previous prime is 231277. The next prime is 231289. The reversal of 231284 is 482132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (34272).

2²³¹²⁸⁴ is an apocalyptic number.

It is an amenable number.

231284 is a deficient number, since it is larger than the sum of its proper divisors (179980).

231284 is a wasteful number, since it uses less digits than its factorization.

With its successor (231285) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (932).

231284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 932 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 231284 is about 480.9199517591. The cubic root of 231284 is about 61.3830593377.

It can be divided in two parts, 23128 and 4, that added together give a palindrome (23132).

The spelling of 231284 in words is "two hundred thirty-one thousand, two hundred eighty-four".