231995 has 4 divisors (see below), whose sum is σ = 278400. Its totient is φ = 185592.

The previous prime is 231967. The next prime is 232003. The reversal of 231995 is 599132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231995 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 231995.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23195 + ... + 23204.

It is an arithmetic number, because the mean of its divisors is an integer number (69600).

2²³¹⁹⁹⁵ is an apocalyptic number.

231995 is a deficient number, since it is larger than the sum of its proper divisors (46405).

231995 is an equidigital number, since it uses as much as digits as its factorization.

231995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46404.

The product of its digits is 2430, while the sum is 29.

The square root of 231995 is about 481.6585927812. The cubic root of 231995 is about 61.4458950857.

The spelling of 231995 in words is "two hundred thirty-one thousand, nine hundred ninety-five".