111581340 has 48 divisors (see below), whose sum is σ = 336463008. Its totient is φ = 27465984.

The previous prime is 111581339. The next prime is 111581359. The reversal of 111581340 is 43185111.

It is a self number, because there is not a number n which added to its sum of digits gives 111581340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70747 + ... + 72306.

It is an arithmetic number, because the mean of its divisors is an integer number (7009646).

Almost surely, 2^111581340 is an apocalyptic number.

111581340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111581340 is an abundant number, since it is smaller than the sum of its proper divisors (224881668).

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

111581340 is a wasteful number, since it uses less digits than its factorization.

111581340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143078 (or 143076 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 111581340 is about 10563.2068994222. The cubic root of 111581340 is about 481.4270897152.

The spelling of 111581340 in words is "one hundred eleven million, five hundred eighty-one thousand, three hundred forty".