111303109 has 4 divisors (see below), whose sum is σ = 112012204. Its totient is φ = 110594016.

The previous prime is 111303107. The next prime is 111303119. The reversal of 111303109 is 901303111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20958084 + 90345025 = 4578^2 + 9505^2 .

It is a cyclic number.

It is not a de Polignac number, because 111303109 - 2¹ = 111303107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111303103) 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 3 ways as a sum of consecutive naturals, for example, 354312 + ... + 354625.

It is an arithmetic number, because the mean of its divisors is an integer number (28003051).

Almost surely, 2^111303109 is an apocalyptic number.

It is an amenable number.

111303109 is a deficient number, since it is larger than the sum of its proper divisors (709095).

111303109 is an equidigital number, since it uses as much as digits as its factorization.

111303109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709094.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 111303109 is about 10550.0288625198. The cubic root of 111303109 is about 481.0266062971.

The spelling of 111303109 in words is "one hundred eleven million, three hundred three thousand, one hundred nine".