11323312111 has 4 divisors (see below), whose sum is σ = 11989389312. Its totient is φ = 10657234912.

The previous prime is 11323312109. The next prime is 11323312139. The reversal of 11323312111 is 11121332311.

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

It is a cyclic number.

It is not a de Polignac number, because 11323312111 - 2¹ = 11323312109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323312151) 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 3 ways as a sum of consecutive naturals, for example, 333038575 + ... + 333038608.

It is an arithmetic number, because the mean of its divisors is an integer number (2997347328).

Almost surely, 2^11323312111 is an apocalyptic number.

11323312111 is a deficient number, since it is larger than the sum of its proper divisors (666077201).

11323312111 is an equidigital number, since it uses as much as digits as its factorization.

11323312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666077200.

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

Adding to 11323312111 its reverse (11121332311), we get a palindrome (22444644422).

The spelling of 11323312111 in words is "eleven billion, three hundred twenty-three million, three hundred twelve thousand, one hundred eleven".