11311323311 has 4 divisors (see below), whose sum is σ = 11311593000. Its totient is φ = 11311053624.

The previous prime is 11311323293. The next prime is 11311323313. The reversal of 11311323311 is 11332311311.

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 11311323311 - 2¹⁴ = 11311306927 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 (11311323313) 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, 56921 + ... + 160818.

It is an arithmetic number, because the mean of its divisors is an integer number (2827898250).

Almost surely, 2^11311323311 is an apocalyptic number.

11311323311 is a deficient number, since it is larger than the sum of its proper divisors (269689).

11311323311 is an equidigital number, since it uses as much as digits as its factorization.

11311323311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269688.

The product of its digits is 162, while the sum is 20.

Adding to 11311323311 its reverse (11332311311), we get a palindrome (22643634622).

The spelling of 11311323311 in words is "eleven billion, three hundred eleven million, three hundred twenty-three thousand, three hundred eleven".