11320311211 has 12 divisors (see below), whose sum is σ = 12872059200. Its totient is φ = 9936320240.

The previous prime is 11320311187. The next prime is 11320311221. The reversal of 11320311211 is 11211302311.

It is a happy number.

It is not a de Polignac number, because 11320311211 - 2¹⁷ = 11320180139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11320311221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1609531 + ... + 1616548.

It is an arithmetic number, because the mean of its divisors is an integer number (1072671600).

Almost surely, 2^11320311211 is an apocalyptic number.

11320311211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11320311211 is a deficient number, since it is larger than the sum of its proper divisors (1551747989).

11320311211 is a wasteful number, since it uses less digits than its factorization.

11320311211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226130 (or 3226119 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11320311211 its reverse (11211302311), we get a palindrome (22531613522).

The spelling of 11320311211 in words is "eleven billion, three hundred twenty million, three hundred eleven thousand, two hundred eleven".