13243111123 has 16 divisors (see below), whose sum is σ = 14918630400. Its totient is φ = 11646482400.

The previous prime is 13243111111. The next prime is 13243111127. The reversal of 13243111123 is 32111134231.

It is a cyclic number.

It is not a de Polignac number, because 13243111123 - 2²¹ = 13241013971 is a prime.

It is a super-2 number, since 2×13243111123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13243111094 and 13243111103.

It is not an unprimeable number, because it can be changed into a prime (13243111127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1204053 + ... + 1215001.

It is an arithmetic number, because the mean of its divisors is an integer number (932414400).

Almost surely, 2^13243111123 is an apocalyptic number.

13243111123 is a deficient number, since it is larger than the sum of its proper divisors (1675519277).

13243111123 is a wasteful number, since it uses less digits than its factorization.

13243111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14538.

The product of its digits is 432, while the sum is 22.

Adding to 13243111123 its reverse (32111134231), we get a palindrome (45354245354).

The spelling of 13243111123 in words is "thirteen billion, two hundred forty-three million, one hundred eleven thousand, one hundred twenty-three".