204123023 has 16 divisors (see below), whose sum is σ = 231907200. Its totient is φ = 178109280.

The previous prime is 204123011. The next prime is 204123041. The reversal of 204123023 is 320321402.

It is a cyclic number.

It is not a de Polignac number, because 204123023 - 2⁶ = 204122959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204122992 and 204123010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204123523) 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, 199808 + ... + 200826.

It is an arithmetic number, because the mean of its divisors is an integer number (14494200).

Almost surely, 2^204123023 is an apocalyptic number.

204123023 is a deficient number, since it is larger than the sum of its proper divisors (27784177).

204123023 is a wasteful number, since it uses less digits than its factorization.

204123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 204123023 is about 14287.1628744128. The cubic root of 204123023 is about 588.7948424726.

Adding to 204123023 its reverse (320321402), we get a palindrome (524444425).

The spelling of 204123023 in words is "two hundred four million, one hundred twenty-three thousand, twenty-three".