111305445 has 8 divisors (see below), whose sum is σ = 178088736. Its totient is φ = 59362896.

The previous prime is 111305431. The next prime is 111305449. The reversal of 111305445 is 544503111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111305445 - 2⁴ = 111305429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111305449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3710167 + ... + 3710196.

It is an arithmetic number, because the mean of its divisors is an integer number (22261092).

Almost surely, 2^111305445 is an apocalyptic number.

111305445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111305445 is a deficient number, since it is larger than the sum of its proper divisors (66783291).

111305445 is an equidigital number, since it uses as much as digits as its factorization.

111305445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420371.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 111305445 is about 10550.1395725365. The cubic root of 111305445 is about 481.0299714929.

Adding to 111305445 its reverse (544503111), we get a palindrome (655808556).

The spelling of 111305445 in words is "one hundred eleven million, three hundred five thousand, four hundred forty-five".