203240013003 has 10 divisors (see below), whose sum is σ = 303605451644. Its totient is φ = 135493341948.

The previous prime is 203240012933. The next prime is 203240013007. The reversal of 203240013003 is 300310042302.

It is not a de Polignac number, because 203240013003 - 2⁹ = 203240012491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203240013007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1254567901 + ... + 1254568062.

Almost surely, 2^203240013003 is an apocalyptic number.

203240013003 is a deficient number, since it is larger than the sum of its proper divisors (100365438641).

203240013003 is an equidigital number, since it uses as much as digits as its factorization.

203240013003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509135975 (or 2509135966 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 203240013003 its reverse (300310042302), we get a palindrome (503550055305).

The spelling of 203240013003 in words is "two hundred three billion, two hundred forty million, thirteen thousand, three".