11311442123123 has 16 divisors (see below), whose sum is σ = 12255938402400. Its totient is φ = 10397982583296.

The previous prime is 11311442123083. The next prime is 11311442123227. The reversal of 11311442123123 is 32132124411311.

It is a cyclic number.

It is not a de Polignac number, because 11311442123123 - 2³⁶ = 11242722646387 is a prime.

It is a super-2 number, since 2×11311442123123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311442143123) 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, 15369353 + ... + 16088501.

It is an arithmetic number, because the mean of its divisors is an integer number (765996150150).

Almost surely, 2^{11311442123123} is an apocalyptic number.

11311442123123 is a deficient number, since it is larger than the sum of its proper divisors (944496279277).

11311442123123 is a wasteful number, since it uses less digits than its factorization.

11311442123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740726.

The product of its digits is 3456, while the sum is 29.

Adding to 11311442123123 its reverse (32132124411311), we get a palindrome (43443566534434).

The spelling of 11311442123123 in words is "eleven trillion, three hundred eleven billion, four hundred forty-two million, one hundred twenty-three thousand, one hundred twenty-three".