12311103 has 24 divisors (see below), whose sum is σ = 19329840. Its totient is φ = 6948480.

The previous prime is 12311093. The next prime is 12311113. The reversal of 12311103 is 30111321.

It is an interprime number because it is at equal distance from previous prime (12311093) and next prime (12311113).

It is not a de Polignac number, because 12311103 - 2⁴ = 12311087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311113) 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 23 ways as a sum of consecutive naturals, for example, 12613 + ... + 13553.

It is an arithmetic number, because the mean of its divisors is an integer number (805410).

Almost surely, 2^12311103 is an apocalyptic number.

12311103 is a deficient number, since it is larger than the sum of its proper divisors (7018737).

12311103 is an equidigital number, since it uses as much as digits as its factorization.

12311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1040 counting only the distinct ones).

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

The square root of 12311103 is about 3508.7181420000. The cubic root of 12311103 is about 230.9044600317.

Adding to 12311103 its reverse (30111321), we get a palindrome (42422424).

The spelling of 12311103 in words is "twelve million, three hundred eleven thousand, one hundred three".