231223 has 2 divisors, whose sum is σ = 231224. Its totient is φ = 231222.

The previous prime is 231197. The next prime is 231241. The reversal of 231223 is 322132.

It is a happy number.

It is a strong prime.

231223 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 231223 - 2¹⁷ = 100151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231293) 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 as a sum of consecutive naturals, namely, 115611 + 115612.

It is an arithmetic number, because the mean of its divisors is an integer number (115612).

2²³¹²²³ is an apocalyptic number.

231223 is a deficient number, since it is larger than the sum of its proper divisors (1).

231223 is an equidigital number, since it uses as much as digits as its factorization.

231223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 13.

The square root of 231223 is about 480.8565274591. The cubic root of 231223 is about 61.3776623714.

Adding to 231223 its reverse (322132), we get a palindrome (553355).

Subtracting 231223 from its reverse (322132), we obtain a palindrome (90909).

It can be divided in two parts, 231 and 223, that added together give a palindrome (454).

The spelling of 231223 in words is "two hundred thirty-one thousand, two hundred twenty-three".