203404104003 has 4 divisors (see below), whose sum is σ = 271205472008. Its totient is φ = 135602736000.

The previous prime is 203404103963. The next prime is 203404104017. The reversal of 203404104003 is 300401404302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 203404104003 - 2⁹ = 203404103491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203404104053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33900683998 + ... + 33900684003.

It is an arithmetic number, because the mean of its divisors is an integer number (67801368002).

Almost surely, 2^203404104003 is an apocalyptic number.

203404104003 is a deficient number, since it is larger than the sum of its proper divisors (67801368005).

203404104003 is an equidigital number, since it uses as much as digits as its factorization.

203404104003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67801368004.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 203404104003 its reverse (300401404302), we get a palindrome (503805508305).

The spelling of 203404104003 in words is "two hundred three billion, four hundred four million, one hundred four thousand, three".