111413209 has 2 divisors, whose sum is σ = 111413210. Its totient is φ = 111413208.

The previous prime is 111413177. The next prime is 111413221. The reversal of 111413209 is 902314111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111408025 + 5184 = 10555^2 + 72^2 .

It is an emirp because it is prime and its reverse (902314111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111413209 - 2⁵ = 111413177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111413209.

It is not a weakly prime, because it can be changed into another prime (111413609) 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, 55706604 + 55706605.

It is an arithmetic number, because the mean of its divisors is an integer number (55706605).

Almost surely, 2^111413209 is an apocalyptic number.

It is an amenable number.

111413209 is a deficient number, since it is larger than the sum of its proper divisors (1).

111413209 is an equidigital number, since it uses as much as digits as its factorization.

111413209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 111413209 is about 10555.2455679629. The cubic root of 111413209 is about 481.1851630423.

The spelling of 111413209 in words is "one hundred eleven million, four hundred thirteen thousand, two hundred nine".