12311001012103 has 4 divisors (see below), whose sum is σ = 12512820700888. Its totient is φ = 12109181323320.

The previous prime is 12311001012067. The next prime is 12311001012139. The reversal of 12311001012103 is 30121010011321.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (12311001012067) and next prime (12311001012139).

It is a cyclic number.

It is not a de Polignac number, because 12311001012103 - 2¹⁷ = 12311000881031 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 (12311001012803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100909844301 + ... + 100909844422.

It is an arithmetic number, because the mean of its divisors is an integer number (3128205175222).

Almost surely, 2^{12311001012103} is an apocalyptic number.

12311001012103 is a deficient number, since it is larger than the sum of its proper divisors (201819688785).

12311001012103 is an equidigital number, since it uses as much as digits as its factorization.

12311001012103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201819688784.

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

Adding to 12311001012103 its reverse (30121010011321), we get a palindrome (42432011023424).

The spelling of 12311001012103 in words is "twelve trillion, three hundred eleven billion, one million, twelve thousand, one hundred three".