11311223311 has 4 divisors (see below), whose sum is σ = 11320753752. Its totient is φ = 11301692872.

The previous prime is 11311223293. The next prime is 11311223347. The reversal of 11311223311 is 11332211311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11332211311 = 105227 ⋅107693.

It is a cyclic number.

It is not a de Polignac number, because 11311223311 - 2¹¹ = 11311221263 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 (11311223381) 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, 4763440 + ... + 4765813.

It is an arithmetic number, because the mean of its divisors is an integer number (2830188438).

Almost surely, 2^11311223311 is an apocalyptic number.

11311223311 is a deficient number, since it is larger than the sum of its proper divisors (9530441).

11311223311 is an equidigital number, since it uses as much as digits as its factorization.

11311223311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9530440.

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

Adding to 11311223311 its reverse (11332211311), we get a palindrome (22643434622).

The spelling of 11311223311 in words is "eleven billion, three hundred eleven million, two hundred twenty-three thousand, three hundred eleven".