20204003 has 2 divisors, whose sum is σ = 20204004. Its totient is φ = 20204002.

The previous prime is 20203969. The next prime is 20204017. The reversal of 20204003 is 30040202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20204003 - 2⁸ = 20203747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20204083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102001 + 10102002.

It is an arithmetic number, because the mean of its divisors is an integer number (10102002).

Almost surely, 2^20204003 is an apocalyptic number.

20204003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204003 is an equidigital number, since it uses as much as digits as its factorization.

20204003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20204003 is about 4494.8863166937. The cubic root of 20204003 is about 272.3615569242.

Adding to 20204003 its reverse (30040202), we get a palindrome (50244205).

The spelling of 20204003 in words is "twenty million, two hundred four thousand, three".