231975 has 18 divisors (see below), whose sum is σ = 415896. Its totient is φ = 123600.

The previous prime is 231967. The next prime is 232003. The reversal of 231975 is 579132.

231975 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231975 - 2³ = 231967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 291 + ... + 740.

2²³¹⁹⁷⁵ is an apocalyptic number.

231975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231975 is a deficient number, since it is larger than the sum of its proper divisors (183921).

231975 is a wasteful number, since it uses less digits than its factorization.

231975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1039 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 231975 is about 481.6378307401. The cubic root of 231975 is about 61.4441293103. Note that the first 3 decimals are identical.

The spelling of 231975 in words is "two hundred thirty-one thousand, nine hundred seventy-five".