231700 has 36 divisors (see below), whose sum is σ = 576352. Its totient is φ = 79200.

The previous prime is 231677. The next prime is 231701. The reversal of 231700 is 7132.

231700 = 84² + 85² + ... + 108².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231701) 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, 535 + ... + 865.

2²³¹⁷⁰⁰ is an apocalyptic number.

231700 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 231700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288176).

231700 is an abundant number, since it is smaller than the sum of its proper divisors (344652).

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

231700 is a wasteful number, since it uses less digits than its factorization.

231700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 231700 is about 481.3522618623. The cubic root of 231700 is about 61.4198395995.

Adding to 231700 its reverse (7132), we get a palindrome (238832).

The spelling of 231700 in words is "two hundred thirty-one thousand, seven hundred".