12311123300123 has 4 divisors (see below), whose sum is σ = 12611394600168. Its totient is φ = 12010852000080.

The previous prime is 12311123300087. The next prime is 12311123300137. The reversal of 12311123300123 is 32100332111321.

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

It is a cyclic number.

It is not a de Polignac number, because 12311123300123 - 2¹⁰ = 12311123299099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12311123300323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150135649961 + ... + 150135650042.

It is an arithmetic number, because the mean of its divisors is an integer number (3152848650042).

Almost surely, 2^{12311123300123} is an apocalyptic number.

12311123300123 is a deficient number, since it is larger than the sum of its proper divisors (300271300045).

12311123300123 is an equidigital number, since it uses as much as digits as its factorization.

12311123300123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300271300044.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12311123300123 its reverse (32100332111321), we get a palindrome (44411455411444).

The spelling of 12311123300123 in words is "twelve trillion, three hundred eleven billion, one hundred twenty-three million, three hundred thousand, one hundred twenty-three".