13111031312123 has 64 divisors (see below), whose sum is σ = 13904260070400. Its totient is φ = 12353433845760.

The previous prime is 13111031312083. The next prime is 13111031312129. The reversal of 13111031312123 is 32121313011131.

It is a cyclic number.

It is not a de Polignac number, because 13111031312123 - 2²⁰ = 13111030263547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111031312129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6430127138 + ... + 6430129176.

It is an arithmetic number, because the mean of its divisors is an integer number (217254063600).

Almost surely, 2^{13111031312123} is an apocalyptic number.

13111031312123 is a deficient number, since it is larger than the sum of its proper divisors (793228758277).

13111031312123 is a wasteful number, since it uses less digits than its factorization.

13111031312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 13111031312123 its reverse (32121313011131), we get a palindrome (45232344323254).

The spelling of 13111031312123 in words is "thirteen trillion, one hundred eleven billion, thirty-one million, three hundred twelve thousand, one hundred twenty-three".