204420353 has 2 divisors, whose sum is σ = 204420354. Its totient is φ = 204420352.

The previous prime is 204420331. The next prime is 204420379. The reversal of 204420353 is 353024402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106667584 + 97752769 = 10328^2 + 9887^2 .

It is a cyclic number.

It is not a de Polignac number, because 204420353 - 2¹⁸ = 204158209 is a prime.

It is not a weakly prime, because it can be changed into another prime (204420313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102210176 + 102210177.

It is an arithmetic number, because the mean of its divisors is an integer number (102210177).

Almost surely, 2^204420353 is an apocalyptic number.

It is an amenable number.

204420353 is a deficient number, since it is larger than the sum of its proper divisors (1).

204420353 is an equidigital number, since it uses as much as digits as its factorization.

204420353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 204420353 is about 14297.5645828232. The cubic root of 204420353 is about 589.0805875343.

Adding to 204420353 its reverse (353024402), we get a palindrome (557444755).

The spelling of 204420353 in words is "two hundred four million, four hundred twenty thousand, three hundred fifty-three".