204315103 has 4 divisors (see below), whose sum is σ = 204762640. Its totient is φ = 203867568.

The previous prime is 204315043. The next prime is 204315131. The reversal of 204315103 is 301513402.

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 204315103 - 2¹⁷ = 204184031 is a prime.

It is a super-2 number, since 2×204315103² = 83489322627801218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204315143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223083 + ... + 223996.

It is an arithmetic number, because the mean of its divisors is an integer number (51190660).

Almost surely, 2^204315103 is an apocalyptic number.

204315103 is a deficient number, since it is larger than the sum of its proper divisors (447537).

204315103 is an equidigital number, since it uses as much as digits as its factorization.

204315103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447536.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 204315103 is about 14293.8834121452. The cubic root of 204315103 is about 588.9794701150.

Adding to 204315103 its reverse (301513402), we get a palindrome (505828505).

The spelling of 204315103 in words is "two hundred four million, three hundred fifteen thousand, one hundred three".