204304403 has 2 divisors, whose sum is σ = 204304404. Its totient is φ = 204304402.

The previous prime is 204304393. The next prime is 204304421. The reversal of 204304403 is 304403402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204304403 is a prime.

It is not a weakly prime, because it can be changed into another prime (204304483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102152201 + 102152202.

It is an arithmetic number, because the mean of its divisors is an integer number (102152202).

Almost surely, 2^204304403 is an apocalyptic number.

204304403 is a deficient number, since it is larger than the sum of its proper divisors (1).

204304403 is an equidigital number, since it uses as much as digits as its factorization.

204304403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 204304403 is about 14293.5091212760. The cubic root of 204304403 is about 588.9691882998.

Adding to 204304403 its reverse (304403402), we get a palindrome (508707805).

The spelling of 204304403 in words is "two hundred four million, three hundred four thousand, four hundred three".