11112312103 has 4 divisors (see below), whose sum is σ = 11113150120. Its totient is φ = 11111474088.

The previous prime is 11112312073. The next prime is 11112312137. The reversal of 11112312103 is 30121321111.

It is a happy number.

11112312103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112312103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112312163) 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 3 ways as a sum of consecutive naturals, for example, 398793 + ... + 425746.

It is an arithmetic number, because the mean of its divisors is an integer number (2778287530).

Almost surely, 2^11112312103 is an apocalyptic number.

11112312103 is a deficient number, since it is larger than the sum of its proper divisors (838017).

11112312103 is an equidigital number, since it uses as much as digits as its factorization.

11112312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838016.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11112312103 its reverse (30121321111), we get a palindrome (41233633214).

The spelling of 11112312103 in words is "eleven billion, one hundred twelve million, three hundred twelve thousand, one hundred three".