204013423 has 2 divisors, whose sum is σ = 204013424. Its totient is φ = 204013422.

The previous prime is 204013421. The next prime is 204013441. The reversal of 204013423 is 324310402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204013423 - 2¹ = 204013421 is a prime.

Together with 204013421, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 204013423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204013421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102006711 + 102006712.

It is an arithmetic number, because the mean of its divisors is an integer number (102006712).

Almost surely, 2^204013423 is an apocalyptic number.

204013423 is a deficient number, since it is larger than the sum of its proper divisors (1).

204013423 is an equidigital number, since it uses as much as digits as its factorization.

204013423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 204013423 is about 14283.3267483454. The cubic root of 204013423 is about 588.6894428514.

Adding to 204013423 its reverse (324310402), we get a palindrome (528323825).

The spelling of 204013423 in words is "two hundred four million, thirteen thousand, four hundred twenty-three".