231023 has 6 divisors (see below), whose sum is σ = 250344. Its totient is φ = 213096.

The previous prime is 231019. The next prime is 231031. The reversal of 231023 is 320132.

It is not a de Polignac number, because 231023 - 2² = 231019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230995 and 231013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 515 + ... + 852.

It is an arithmetic number, because the mean of its divisors is an integer number (41724).

2²³¹⁰²³ is an apocalyptic number.

231023 is a deficient number, since it is larger than the sum of its proper divisors (19321).

231023 is a wasteful number, since it uses less digits than its factorization.

231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 231023 is about 480.6485202307. The cubic root of 231023 is about 61.3599607392.

Adding to 231023 its reverse (320132), we get a palindrome (551155).

The spelling of 231023 in words is "two hundred thirty-one thousand, twenty-three".