231708 has 12 divisors (see below), whose sum is σ = 540680. Its totient is φ = 77232.

The previous prime is 231701. The next prime is 231709. The reversal of 231708 is 807132.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231701) by changing a digit.

231708 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9643 + ... + 9666.

2²³¹⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

231708 is an abundant number, since it is smaller than the sum of its proper divisors (308972).

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

231708 is a wasteful number, since it uses less digits than its factorization.

231708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19316 (or 19314 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 231708 is about 481.3605717131. The cubic root of 231708 is about 61.4205464806.

It can be divided in two parts, 231 and 708, that added together give a palindrome (939).

The spelling of 231708 in words is "two hundred thirty-one thousand, seven hundred eight".