12311020103 has 16 divisors (see below), whose sum is σ = 12805929696. Its totient is φ = 11825948160.

The previous prime is 12311020031. The next prime is 12311020109. The reversal of 12311020103 is 30102011321.

It is not a de Polignac number, because 12311020103 - 2¹⁰ = 12311019079 is a prime.

It is a super-2 number, since 2×12311020103² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311020109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1921301 + ... + 1927697.

It is an arithmetic number, because the mean of its divisors is an integer number (800370606).

Almost surely, 2^12311020103 is an apocalyptic number.

12311020103 is a deficient number, since it is larger than the sum of its proper divisors (494909593).

12311020103 is an equidigital number, since it uses as much as digits as its factorization.

12311020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12311020103 its reverse (30102011321), we get a palindrome (42413031424).

The spelling of 12311020103 in words is "twelve billion, three hundred eleven million, twenty thousand, one hundred three".