231475 has 12 divisors (see below), whose sum is σ = 294624. Its totient is φ = 180320.

The previous prime is 231463. The next prime is 231479. The reversal of 231475 is 574132.

It is not a de Polignac number, because 231475 - 2⁵ = 231443 is a prime.

It is a Duffinian number.

231475 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (231479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1077 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (24552).

2²³¹⁴⁷⁵ is an apocalyptic number.

231475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231475 is a deficient number, since it is larger than the sum of its proper divisors (63149).

231475 is a wasteful number, since it uses less digits than its factorization.

231475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 249 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 231475 is about 481.1184885244. The cubic root of 231475 is about 61.3999519004.

The spelling of 231475 in words is "two hundred thirty-one thousand, four hundred seventy-five".