11311323312 has 20 divisors (see below), whose sum is σ = 29220918680. Its totient is φ = 3770441088.

The previous prime is 11311323293. The next prime is 11311323313. The reversal of 11311323312 is 21332311311.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11311323313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117826237 + ... + 117826332.

It is an arithmetic number, because the mean of its divisors is an integer number (1461045934).

Almost surely, 2^11311323312 is an apocalyptic number.

11311323312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11311323312 is an abundant number, since it is smaller than the sum of its proper divisors (17909595368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11311323312 is a wasteful number, since it uses less digits than its factorization.

11311323312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235652580 (or 235652574 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

Adding to 11311323312 its reverse (21332311311), we get a palindrome (32643634623).

The spelling of 11311323312 in words is "eleven billion, three hundred eleven million, three hundred twenty-three thousand, three hundred twelve".