111316817 has 2 divisors, whose sum is σ = 111316818. Its totient is φ = 111316816.

The previous prime is 111316813. The next prime is 111316823. The reversal of 111316817 is 718613111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110859841 + 456976 = 10529^2 + 676^2 .

It is an emirp because it is prime and its reverse (718613111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111316817 - 2² = 111316813 is a prime.

It is a super-2 number, since 2×111316817² = 24782867494022978, which contains 22 as substring.

It is equal to p_6374234 and since 111316817 and 6374234 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111316817.

It is not a weakly prime, because it can be changed into another prime (111316811) 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 as a sum of consecutive naturals, namely, 55658408 + 55658409.

It is an arithmetic number, because the mean of its divisors is an integer number (55658409).

Almost surely, 2^111316817 is an apocalyptic number.

It is an amenable number.

111316817 is a deficient number, since it is larger than the sum of its proper divisors (1).

111316817 is an equidigital number, since it uses as much as digits as its factorization.

111316817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 29.

The square root of 111316817 is about 10550.6785089870. The cubic root of 111316817 is about 481.0463531011.

Adding to 111316817 its reverse (718613111), we get a palindrome (829929928).

The spelling of 111316817 in words is "one hundred eleven million, three hundred sixteen thousand, eight hundred seventeen".