231800 has 48 divisors (see below), whose sum is σ = 576600. Its totient is φ = 86400.

The previous prime is 231799. The next prime is 231809. The reversal of 231800 is 8132.

231800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3770 + ... + 3830.

2²³¹⁸⁰⁰ is an apocalyptic number.

231800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288300).

231800 is an abundant number, since it is smaller than the sum of its proper divisors (344800).

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

231800 is a wasteful number, since it uses less digits than its factorization.

231800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 231800 is about 481.4561246884. The cubic root of 231800 is about 61.4286744442.

Adding to 231800 its reverse (8132), we get a palindrome (239932).

The spelling of 231800 in words is "two hundred thirty-one thousand, eight hundred".