231100 has 18 divisors (see below), whose sum is σ = 501704. Its totient is φ = 92400.

The previous prime is 231079. The next prime is 231107. The reversal of 231100 is 1132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1056 + ... + 1255.

2²³¹¹⁰⁰ is an apocalyptic number.

231100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231100 is an abundant number, since it is smaller than the sum of its proper divisors (270604).

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

231100 is a wasteful number, since it uses less digits than its factorization.

231100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 231100 is about 480.7286136689. The cubic root of 231100 is about 61.3667770766.

Adding to 231100 its reverse (1132), we get a palindrome (232232).

The spelling of 231100 in words is "two hundred thirty-one thousand, one hundred".