204320023 has 2 divisors, whose sum is σ = 204320024. Its totient is φ = 204320022.

The previous prime is 204320003. The next prime is 204320027. The reversal of 204320023 is 320023402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204320023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204319979 and 204320006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204320027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102160011 + 102160012.

It is an arithmetic number, because the mean of its divisors is an integer number (102160012).

Almost surely, 2^204320023 is an apocalyptic number.

204320023 is a deficient number, since it is larger than the sum of its proper divisors (1).

204320023 is an equidigital number, since it uses as much as digits as its factorization.

204320023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 204320023 is about 14294.0555126948. The cubic root of 204320023 is about 588.9841977076.

Adding to 204320023 its reverse (320023402), we get a palindrome (524343425).

The spelling of 204320023 in words is "two hundred four million, three hundred twenty thousand, twenty-three".