231879 has 8 divisors (see below), whose sum is σ = 317680. Its totient is φ = 150336.

The previous prime is 231877. The next prime is 231893. The reversal of 231879 is 978132.

It is a happy number.

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

It is not a de Polignac number, because 231879 - 2¹ = 231877 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 (231871) 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, 934 + ... + 1155.

It is an arithmetic number, because the mean of its divisors is an integer number (39710).

2²³¹⁸⁷⁹ is an apocalyptic number.

231879 is a deficient number, since it is larger than the sum of its proper divisors (85801).

231879 is a wasteful number, since it uses less digits than its factorization.

231879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129.

The product of its digits is 3024, while the sum is 30.

The square root of 231879 is about 481.5381604816. The cubic root of 231879 is about 61.4356521751.

The spelling of 231879 in words is "two hundred thirty-one thousand, eight hundred seventy-nine".