Adding to 231864 its reverse (468132), we get a palindrome (699996).
It is a happy number.
231864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a nude number because it is divisible by every one of its digits.
It is a nialpdrome in base 12.
It is a congruent number.
It is an unprimeable number.
231864 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2231864 is an apocalyptic number.
231864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
231864 is a wasteful number, since it uses less digits than its factorization.
231864 is an odious number, because the sum of its binary digits is odd.
The square root of 231864 is about 481.5225851401. The cubic root of 231864 is about 61.4343274114.
The spelling of 231864 in words is "two hundred thirty-one thousand, eight hundred sixty-four".