231844 has 12 divisors (see below), whose sum is σ = 409500. Its totient is φ = 114848.

The previous prime is 231841. The next prime is 231859. The reversal of 231844 is 448132.

It can be written as a sum of positive squares in 2 ways, for example, as 40000 + 191844 = 200^2 + 438^2 .

It is not an unprimeable number, because it can be changed into a prime (231841) 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, 402 + ... + 790.

It is an arithmetic number, because the mean of its divisors is an integer number (34125).

2²³¹⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

231844 is a deficient number, since it is larger than the sum of its proper divisors (177656).

231844 is a wasteful number, since it uses less digits than its factorization.

231844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 540 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 231844 is about 481.5018172344. The cubic root of 231844 is about 61.4325609709.

Adding to 231844 its reverse (448132), we get a palindrome (679976).

The spelling of 231844 in words is "two hundred thirty-one thousand, eight hundred forty-four".