204230993 has 2 divisors, whose sum is σ = 204230994. Its totient is φ = 204230992.

The previous prime is 204230947. The next prime is 204231017. The reversal of 204230993 is 399032402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106853569 + 97377424 = 10337^2 + 9868^2 .

It is a cyclic number.

It is not a de Polignac number, because 204230993 - 2¹⁰ = 204229969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (204230903) 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, 102115496 + 102115497.

It is an arithmetic number, because the mean of its divisors is an integer number (102115497).

Almost surely, 2^204230993 is an apocalyptic number.

It is an amenable number.

204230993 is a deficient number, since it is larger than the sum of its proper divisors (1).

204230993 is an equidigital number, since it uses as much as digits as its factorization.

204230993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 204230993 is about 14290.9409417295. The cubic root of 204230993 is about 588.8986376786.

It can be divided in two parts, 2042309 and 93, that added together give a palindrome (2042402).

The spelling of 204230993 in words is "two hundred four million, two hundred thirty thousand, nine hundred ninety-three".