1320111003 has 16 divisors (see below), whose sum is σ = 1770255360. Its totient is φ = 875032704.

The previous prime is 1320110971. The next prime is 1320111031. The reversal of 1320111003 is 3001110231.

It is not a de Polignac number, because 1320111003 - 2⁵ = 1320110971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320111003.

It is not an unprimeable number, because it can be changed into a prime (1320111053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 703875 + ... + 705747.

It is an arithmetic number, because the mean of its divisors is an integer number (110640960).

Almost surely, 2^1320111003 is an apocalyptic number.

1320111003 is a deficient number, since it is larger than the sum of its proper divisors (450144357).

1320111003 is a wasteful number, since it uses less digits than its factorization.

1320111003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098.

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

The square root of 1320111003 is about 36333.3318455657. The cubic root of 1320111003 is about 1096.9920586136.

Adding to 1320111003 its reverse (3001110231), we get a palindrome (4321221234).

The spelling of 1320111003 in words is "one billion, three hundred twenty million, one hundred eleven thousand, three".