204000011 has 2 divisors, whose sum is σ = 204000012. Its totient is φ = 204000010.

The previous prime is 203999989. The next prime is 204000023. The reversal of 204000011 is 110000402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204000011 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204000031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102000005 + 102000006.

It is an arithmetic number, because the mean of its divisors is an integer number (102000006).

Almost surely, 2^204000011 is an apocalyptic number.

204000011 is a deficient number, since it is larger than the sum of its proper divisors (1).

204000011 is an equidigital number, since it uses as much as digits as its factorization.

204000011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 204000011 is about 14282.8572421627. The cubic root of 204000011 is about 588.6765422691.

Adding to 204000011 its reverse (110000402), we get a palindrome (314000413).

The spelling of 204000011 in words is "two hundred four million, eleven", and thus it is an aban number.