1103112003 has 16 divisors (see below), whose sum is σ = 1682737920. Its totient is φ = 629672736.

The previous prime is 1103111857. The next prime is 1103112037. The reversal of 1103112003 is 3002113011.

It is not a de Polignac number, because 1103112003 - 2¹⁰ = 1103110979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1103112003.

It is not an unprimeable number, because it can be changed into a prime (1103111003) 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 15 ways as a sum of consecutive naturals, for example, 7848 + ... + 47621.

It is an arithmetic number, because the mean of its divisors is an integer number (105171120).

Almost surely, 2^1103112003 is an apocalyptic number.

1103112003 is a deficient number, since it is larger than the sum of its proper divisors (579625917).

1103112003 is an equidigital number, since it uses as much as digits as its factorization.

1103112003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56426.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1103112003 is about 33213.1299789707. The cubic root of 1103112003 is about 1033.2526712502.

Adding to 1103112003 its reverse (3002113011), we get a palindrome (4105225014).

It can be divided in two parts, 110 and 3112003, that added together give a palindrome (3112113).

The spelling of 1103112003 in words is "one billion, one hundred three million, one hundred twelve thousand, three".