111301320312 has 192 divisors, whose sum is σ = 376543265280. Its totient is φ = 28915958016.

The previous prime is 111301320307. The next prime is 111301320359. The reversal of 111301320312 is 213023103111.

111301320312 is a `hidden beast` number, since 1 + 1 + 1 + 30 + 1 + 320 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312213 + ... + 565755.

It is an arithmetic number, because the mean of its divisors is an integer number (1961162840).

Almost surely, 2^111301320312 is an apocalyptic number.

111301320312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111301320312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188271632640).

111301320312 is an abundant number, since it is smaller than the sum of its proper divisors (265241944968).

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

111301320312 is a wasteful number, since it uses less digits than its factorization.

111301320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253642 (or 253635 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 111301320312 its reverse (213023103111), we get a palindrome (324324423423).

The spelling of 111301320312 in words is "one hundred eleven billion, three hundred one million, three hundred twenty thousand, three hundred twelve".