204100103 has 6 divisors (see below), whose sum is σ = 209766816. Its totient is φ = 198582552.

The previous prime is 204100097. The next prime is 204100111. The reversal of 204100103 is 301001402.

It is a happy number.

It is not a de Polignac number, because 204100103 - 2⁴ = 204100087 is a prime.

It is a super-2 number, since 2×204100103² = 83313704089221218, 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 (204100003) 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 in 5 ways as a sum of consecutive naturals, for example, 73175 + ... + 75912.

It is an arithmetic number, because the mean of its divisors is an integer number (34961136).

Almost surely, 2^204100103 is an apocalyptic number.

204100103 is a deficient number, since it is larger than the sum of its proper divisors (5666713).

204100103 is an equidigital number, since it uses as much as digits as its factorization.

204100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149161 (or 149124 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 204100103 is about 14286.3607332308. The cubic root of 204100103 is about 588.7728039935.

Adding to 204100103 its reverse (301001402), we get a palindrome (505101505).

The spelling of 204100103 in words is "two hundred four million, one hundred thousand, one hundred three".