11113323123 has 16 divisors (see below), whose sum is σ = 17099004416. Its totient is φ = 6288814080.

The previous prime is 11113323049. The next prime is 11113323127. The reversal of 11113323123 is 32132331111.

It is a happy number.

It is not a de Polignac number, because 11113323123 - 2¹² = 11113319027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11113323123.

It is not an unprimeable number, because it can be changed into a prime (11113323127) 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, 2566798 + ... + 2571123.

It is an arithmetic number, because the mean of its divisors is an integer number (1068687776).

Almost surely, 2^11113323123 is an apocalyptic number.

11113323123 is a deficient number, since it is larger than the sum of its proper divisors (5985681293).

11113323123 is a wasteful number, since it uses less digits than its factorization.

11113323123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138034.

The product of its digits is 324, while the sum is 21.

Adding to 11113323123 its reverse (32132331111), we get a palindrome (43245654234).

The spelling of 11113323123 in words is "eleven billion, one hundred thirteen million, three hundred twenty-three thousand, one hundred twenty-three".