231600 has 60 divisors (see below), whose sum is σ = 745736. Its totient is φ = 61440.

The previous prime is 231599. The next prime is 231607. The reversal of 231600 is 6132.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 231600.

It is not an unprimeable number, because it can be changed into a prime (231607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1104 + ... + 1296.

2²³¹⁶⁰⁰ is an apocalyptic number.

231600 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 231600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372868).

231600 is an abundant number, since it is smaller than the sum of its proper divisors (514136).

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

231600 is a wasteful number, since it uses less digits than its factorization.

231600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 231600 is about 481.2483766206. The cubic root of 231600 is about 61.4110022124.

Adding to 231600 its reverse (6132), we get a palindrome (237732).

The spelling of 231600 in words is "two hundred thirty-one thousand, six hundred".