203103012003 has 16 divisors (see below), whose sum is σ = 274959543936. Its totient is φ = 133334873280.

The previous prime is 203103012001. The next prime is 203103012019. The reversal of 203103012003 is 300210301302.

It is not a de Polignac number, because 203103012003 - 2¹ = 203103012001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203103012001) 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 15 ways as a sum of consecutive naturals, for example, 1252018 + ... + 1404903.

It is an arithmetic number, because the mean of its divisors is an integer number (17184971496).

Almost surely, 2^203103012003 is an apocalyptic number.

203103012003 is a deficient number, since it is larger than the sum of its proper divisors (71856531933).

203103012003 is a wasteful number, since it uses less digits than its factorization.

203103012003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657314.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 203103012003 its reverse (300210301302), we get a palindrome (503313313305).

The spelling of 203103012003 in words is "two hundred three billion, one hundred three million, twelve thousand, three".