11311223309999 has 4 divisors (see below), whose sum is σ = 11323295054064. Its totient is φ = 11299151565936.

The previous prime is 11311223309993. The next prime is 11311223310001. The reversal of 11311223309999 is 99990332211311.

11311223309999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11311223309999 - 2²⁸ = 11310954874543 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 11311223309999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311223309993) 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, 6035870627 + ... + 6035872500.

It is an arithmetic number, because the mean of its divisors is an integer number (2830823763516).

Almost surely, 2^{11311223309999} is an apocalyptic number.

11311223309999 is a deficient number, since it is larger than the sum of its proper divisors (12071744065).

11311223309999 is an equidigital number, since it uses as much as digits as its factorization.

11311223309999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12071744064.

The product of its (nonzero) digits is 708588, while the sum is 53.

The spelling of 11311223309999 in words is "eleven trillion, three hundred eleven billion, two hundred twenty-three million, three hundred nine thousand, nine hundred ninety-nine".