11312320112 has 40 divisors (see below), whose sum is σ = 22710927360. Its totient is φ = 5452827840.

The previous prime is 11312320091. The next prime is 11312320157. The reversal of 11312320112 is 21102321311.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 87089 + ... + 173807.

It is an arithmetic number, because the mean of its divisors is an integer number (567773184).

Almost surely, 2^11312320112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11312320112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11355463680).

11312320112 is an abundant number, since it is smaller than the sum of its proper divisors (11398607248).

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

11312320112 is a wasteful number, since it uses less digits than its factorization.

11312320112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87021 (or 87015 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11312320112 its reverse (21102321311), we get a palindrome (32414641423).

The spelling of 11312320112 in words is "eleven billion, three hundred twelve million, three hundred twenty thousand, one hundred twelve".