231275 has 18 divisors (see below), whose sum is σ = 324012. Its totient is φ = 162400.

The previous prime is 231271. The next prime is 231277. The reversal of 231275 is 572132.

It is not a de Polignac number, because 231275 - 2² = 231271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7961 + ... + 7989.

2²³¹²⁷⁵ is an apocalyptic number.

231275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231275 is a deficient number, since it is larger than the sum of its proper divisors (92737).

231275 is a wasteful number, since it uses less digits than its factorization.

231275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 45 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 231275 is about 480.9105946015. The cubic root of 231275 is about 61.3822631236.

It can be divided in two parts, 23127 and 5, that added together give a palindrome (23132).

The spelling of 231275 in words is "two hundred thirty-one thousand, two hundred seventy-five".