204023081 has 2 divisors, whose sum is σ = 204023082. Its totient is φ = 204023080.

The previous prime is 204023077. The next prime is 204023111. The reversal of 204023081 is 180320402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122301481 + 81721600 = 11059^2 + 9040^2 .

It is a cyclic number.

It is not a de Polignac number, because 204023081 - 2² = 204023077 is a prime.

It is a super-2 number, since 2×204023081² = 83250835161465122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204023021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102011540 + 102011541.

It is an arithmetic number, because the mean of its divisors is an integer number (102011541).

Almost surely, 2^204023081 is an apocalyptic number.

It is an amenable number.

204023081 is a deficient number, since it is larger than the sum of its proper divisors (1).

204023081 is an equidigital number, since it uses as much as digits as its factorization.

204023081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 204023081 is about 14283.6648308479. The cubic root of 204023081 is about 588.6987322286.

Adding to 204023081 its reverse (180320402), we get a palindrome (384343483).

The spelling of 204023081 in words is "two hundred four million, twenty-three thousand, eighty-one".