204420323 has 4 divisors (see below), whose sum is σ = 209174328. Its totient is φ = 199666320.

The previous prime is 204420313. The next prime is 204420331. The reversal of 204420323 is 323024402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204420323 - 2¹² = 204416227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204420295 and 204420304.

It is not an unprimeable number, because it can be changed into a prime (204420313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2376938 + ... + 2377023.

It is an arithmetic number, because the mean of its divisors is an integer number (52293582).

Almost surely, 2^204420323 is an apocalyptic number.

204420323 is a deficient number, since it is larger than the sum of its proper divisors (4754005).

204420323 is an equidigital number, since it uses as much as digits as its factorization.

204420323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754004.

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

The square root of 204420323 is about 14297.5635336934. The cubic root of 204420323 is about 589.0805587172.

Adding to 204420323 its reverse (323024402), we get a palindrome (527444725).

The spelling of 204420323 in words is "two hundred four million, four hundred twenty thousand, three hundred twenty-three".