11121311323 has 4 divisors (see below), whose sum is σ = 11225248920. Its totient is φ = 11017373728.

The previous prime is 11121311309. The next prime is 11121311353. The reversal of 11121311323 is 32311312111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121311323 is a prime.

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 11121311323.

It is not an unprimeable number, because it can be changed into a prime (11121311353) 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, 51968638 + ... + 51968851.

It is an arithmetic number, because the mean of its divisors is an integer number (2806312230).

Almost surely, 2^11121311323 is an apocalyptic number.

11121311323 is a deficient number, since it is larger than the sum of its proper divisors (103937597).

11121311323 is a wasteful number, since it uses less digits than its factorization.

11121311323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103937596.

The product of its digits is 108, while the sum is 19.

Adding to 11121311323 its reverse (32311312111), we get a palindrome (43432623434).

The spelling of 11121311323 in words is "eleven billion, one hundred twenty-one million, three hundred eleven thousand, three hundred twenty-three".