111781040 has 160 divisors (see below), whose sum is σ = 315408384. Its totient is φ = 36034560.

The previous prime is 111781027. The next prime is 111781057. The reversal of 111781040 is 40187111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111780997 and 111781015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815852 + ... + 815988.

Almost surely, 2^111781040 is an apocalyptic number.

111781040 is a gapful number since it is divisible by the number (10) 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 111781040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157704192).

111781040 is an abundant number, since it is smaller than the sum of its proper divisors (203627344).

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

111781040 is a wasteful number, since it uses less digits than its factorization.

111781040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 111781040 is about 10572.6552956199. The cubic root of 111781040 is about 481.7141260346.

The spelling of 111781040 in words is "one hundred eleven million, seven hundred eighty-one thousand, forty".