231873 has 4 divisors (see below), whose sum is σ = 309168. Its totient is φ = 154580.

The previous prime is 231871. The next prime is 231877. The reversal of 231873 is 378132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231873 - 2¹ = 231871 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38643 + ... + 38648.

It is an arithmetic number, because the mean of its divisors is an integer number (77292).

2²³¹⁸⁷³ is an apocalyptic number.

It is an amenable number.

231873 is a deficient number, since it is larger than the sum of its proper divisors (77295).

231873 is an equidigital number, since it uses as much as digits as its factorization.

231873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77294.

The product of its digits is 1008, while the sum is 24.

The square root of 231873 is about 481.5319304055. The cubic root of 231873 is about 61.4351222765.

The spelling of 231873 in words is "two hundred thirty-one thousand, eight hundred seventy-three".