111312310312 has 128 divisors (see below), whose sum is σ = 260444160000. Its totient is φ = 43517488896.

The previous prime is 111312310301. The next prime is 111312310313. The reversal of 111312310312 is 213013213111.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 111312310312.

It is not an unprimeable number, because it can be changed into a prime (111312310313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11813139 + ... + 11822557.

It is an arithmetic number, because the mean of its divisors is an integer number (2034720000).

Almost surely, 2^111312310312 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 111312310312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130222080000).

111312310312 is an abundant number, since it is smaller than the sum of its proper divisors (149131849688).

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

111312310312 is a wasteful number, since it uses less digits than its factorization.

111312310312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9863 (or 9859 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111312310312 its reverse (213013213111), we get a palindrome (324325523423).

The spelling of 111312310312 in words is "one hundred eleven billion, three hundred twelve million, three hundred ten thousand, three hundred twelve".