11321111331023 has 16 divisors (see below), whose sum is σ = 12527699036160. Its totient is φ = 10164519205344.

The previous prime is 11321111330993. The next prime is 11321111331031. The reversal of 11321111331023 is 32013311112311.

It is a cyclic number.

It is not a de Polignac number, because 11321111331023 - 2²² = 11321107136719 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 11321111331023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321111331083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42235511 + ... + 42502712.

It is an arithmetic number, because the mean of its divisors is an integer number (782981189760).

Almost surely, 2^{11321111331023} is an apocalyptic number.

11321111331023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11321111331023 is a deficient number, since it is larger than the sum of its proper divisors (1206587705137).

11321111331023 is a wasteful number, since it uses less digits than its factorization.

11321111331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84738518.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 11321111331023 its reverse (32013311112311), we get a palindrome (43334422443334).

The spelling of 11321111331023 in words is "eleven trillion, three hundred twenty-one billion, one hundred eleven million, three hundred thirty-one thousand, twenty-three".