231723 has 6 divisors (see below), whose sum is σ = 334724. Its totient is φ = 154476.

The previous prime is 231719. The next prime is 231779. The reversal of 231723 is 327132.

231723 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231723 - 2² = 231719 is a prime.

It is a Duffinian number.

231723 is strictly pandigital in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 231696 and 231705.

It is not an unprimeable number, because it can be changed into a prime (231223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12865 + ... + 12882.

2²³¹⁷²³ is an apocalyptic number.

231723 is a deficient number, since it is larger than the sum of its proper divisors (103001).

231723 is a wasteful number, since it uses less digits than its factorization.

231723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25753 (or 25750 counting only the distinct ones).

The product of its digits is 252, while the sum is 18.

The square root of 231723 is about 481.3761522967. The cubic root of 231723 is about 61.4218718388.

Adding to 231723 its reverse (327132), we get a palindrome (558855).

The spelling of 231723 in words is "two hundred thirty-one thousand, seven hundred twenty-three".