231223023 has 12 divisors (see below), whose sum is σ = 335990928. Its totient is φ = 153224640.

The previous prime is 231223021. The next prime is 231223039. The reversal of 231223023 is 320322132.

It is a happy number.

It is not a de Polignac number, because 231223023 - 2¹ = 231223021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231222987 and 231223005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231223021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75418 + ... + 78423.

It is an arithmetic number, because the mean of its divisors is an integer number (27999244).

Almost surely, 2^231223023 is an apocalyptic number.

231223023 is a deficient number, since it is larger than the sum of its proper divisors (104767905).

231223023 is a wasteful number, since it uses less digits than its factorization.

231223023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154014 (or 154011 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 231223023 is about 15206.0193015792. The cubic root of 231223023 is about 613.7766440649.

Adding to 231223023 its reverse (320322132), we get a palindrome (551545155).

The spelling of 231223023 in words is "two hundred thirty-one million, two hundred twenty-three thousand, twenty-three".