111131203331988 has 288 divisors, whose sum is σ = 348083785969920. Its totient is φ = 29168259563520.

The previous prime is 111131203331933. The next prime is 111131203332001. The reversal of 111131203331988 is 889133302131111.

111131203331988 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 3 + 120 + 333 + 198 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 259340628 + ... + 259768788.

It is an arithmetic number, because the mean of its divisors is an integer number (1208624256840).

Almost surely, 2^{111131203331988} is an apocalyptic number.

111131203331988 is a gapful number since it is divisible by the number (18) 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 111131203331988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174041892984960).

111131203331988 is an abundant number, since it is smaller than the sum of its proper divisors (236952582637932).

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

111131203331988 is a wasteful number, since it uses less digits than its factorization.

111131203331988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429647 (or 429642 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 111131203331988 in words is "one hundred eleven trillion, one hundred thirty-one billion, two hundred three million, three hundred thirty-one thousand, nine hundred eighty-eight".