2003112403 has 8 divisors (see below), whose sum is σ = 2010145280. Its totient is φ = 1996089480.

The previous prime is 2003112313. The next prime is 2003112437. The reversal of 2003112403 is 3042113002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2003112403 - 2²⁵ = 1969557971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003112443) 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 7 ways as a sum of consecutive naturals, for example, 865618 + ... + 867928.

It is an arithmetic number, because the mean of its divisors is an integer number (251268160).

Almost surely, 2^2003112403 is an apocalyptic number.

2003112403 is a deficient number, since it is larger than the sum of its proper divisors (7032877).

2003112403 is a wasteful number, since it uses less digits than its factorization.

2003112403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2003112403 is about 44756.1437458591. The cubic root of 2003112403 is about 1260.5742748380.

Adding to 2003112403 its reverse (3042113002), we get a palindrome (5045225405).

The spelling of 2003112403 in words is "two billion, three million, one hundred twelve thousand, four hundred three".