11311109 has 2 divisors, whose sum is σ = 11311110. Its totient is φ = 11311108.

The previous prime is 11311087. The next prime is 11311117. The reversal of 11311109 is 90111311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6360484 + 4950625 = 2522^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311109 - 2¹⁶ = 11245573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655554 + 5655555.

It is an arithmetic number, because the mean of its divisors is an integer number (5655555).

Almost surely, 2^11311109 is an apocalyptic number.

It is an amenable number.

11311109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311109 is an equidigital number, since it uses as much as digits as its factorization.

11311109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 17.

The square root of 11311109 is about 3363.1992209799. The cubic root of 11311109 is about 224.4752148140.

The spelling of 11311109 in words is "eleven million, three hundred eleven thousand, one hundred nine".