11320312112312 has 128 divisors (see below), whose sum is σ = 26679792614400. Its totient is φ = 4390597094400.

The previous prime is 11320312112309. The next prime is 11320312112377. The reversal of 11320312112312 is 21321121302311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18319262 + ... + 18927122.

It is an arithmetic number, because the mean of its divisors is an integer number (208435879800).

Almost surely, 2^{11320312112312} 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 11320312112312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13339896307200).

11320312112312 is an abundant number, since it is smaller than the sum of its proper divisors (15359480502088).

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

11320312112312 is a wasteful number, since it uses less digits than its factorization.

11320312112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608677 (or 608673 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11320312112312 its reverse (21321121302311), we get a palindrome (32641433414623).

The spelling of 11320312112312 in words is "eleven trillion, three hundred twenty billion, three hundred twelve million, one hundred twelve thousand, three hundred twelve".