231344 has 20 divisors (see below), whose sum is σ = 472440. Its totient is φ = 109440.

The previous prime is 231331. The next prime is 231347. The reversal of 231344 is 443132.

231344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231347) by changing a digit.

231344 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77 + ... + 684.

It is an arithmetic number, because the mean of its divisors is an integer number (23622).

2²³¹³⁴⁴ is an apocalyptic number.

It is an amenable number.

231344 is an abundant number, since it is smaller than the sum of its proper divisors (241096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231344 is a wasteful number, since it uses less digits than its factorization.

231344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 782 counting only the distinct ones).

The product of its digits is 288, while the sum is 17.

The square root of 231344 is about 480.9823281577. The cubic root of 231344 is about 61.3883669034.

Adding to 231344 its sum of digits (17), we get a square (231361 = 481²).

Adding to 231344 its reverse (443132), we get a palindrome (674476).

It can be divided in two parts, 231 and 344, that added together give a palindrome (575).

The spelling of 231344 in words is "two hundred thirty-one thousand, three hundred forty-four".