204563423 has 2 divisors, whose sum is σ = 204563424. Its totient is φ = 204563422.

The previous prime is 204563413. The next prime is 204563453. The reversal of 204563423 is 324365402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204563423 - 2⁴ = 204563407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204563413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102281711 + 102281712.

It is an arithmetic number, because the mean of its divisors is an integer number (102281712).

Almost surely, 2^204563423 is an apocalyptic number.

204563423 is a deficient number, since it is larger than the sum of its proper divisors (1).

204563423 is an equidigital number, since it uses as much as digits as its factorization.

204563423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 204563423 is about 14302.5670073592. The cubic root of 204563423 is about 589.2179843315.

The spelling of 204563423 in words is "two hundred four million, five hundred sixty-three thousand, four hundred twenty-three".