231933 has 16 divisors (see below), whose sum is σ = 351680. Its totient is φ = 134784.

The previous prime is 231923. The next prime is 231943. The reversal of 231933 is 339132.

It is an interprime number because it is at equal distance from previous prime (231923) and next prime (231943).

It is not a de Polignac number, because 231933 - 2⁵ = 231901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 585 + ... + 897.

It is an arithmetic number, because the mean of its divisors is an integer number (21980).

2²³¹⁹³³ is an apocalyptic number.

It is an amenable number.

231933 is a deficient number, since it is larger than the sum of its proper divisors (119747).

231933 is a wasteful number, since it uses less digits than its factorization.

231933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348.

The product of its digits is 486, while the sum is 21.

The square root of 231933 is about 481.5942275402. The cubic root of 231933 is about 61.4404208515.

The spelling of 231933 in words is "two hundred thirty-one thousand, nine hundred thirty-three".