231005 has 8 divisors (see below), whose sum is σ = 283392. Its totient is φ = 180688.

The previous prime is 231001. The next prime is 231017. The reversal of 231005 is 500132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231005 - 2² = 231001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257 + ... + 726.

It is an arithmetic number, because the mean of its divisors is an integer number (35424).

2²³¹⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

231005 is a deficient number, since it is larger than the sum of its proper divisors (52387).

231005 is an equidigital number, since it uses as much as digits as its factorization.

231005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 231005 is about 480.6297951646. The cubic root of 231005 is about 61.3583670913.

Adding to 231005 its reverse (500132), we get a palindrome (731137).

The spelling of 231005 in words is "two hundred thirty-one thousand, five".