3311111091809 has 2 divisors, whose sum is σ = 3311111091810. Its totient is φ = 3311111091808.

The previous prime is 3311111091733. The next prime is 3311111091817. The reversal of 3311111091809 is 9081901111133.

3311111091809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2809780537600 + 501330554209 = 1676240^2 + 708047^2 .

It is an emirp because it is prime and its reverse (9081901111133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3311111091809 - 2⁸ = 3311111091553 is a prime.

It is not a weakly prime, because it can be changed into another prime (3311111091889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655555545904 + 1655555545905.

It is an arithmetic number, because the mean of its divisors is an integer number (1655555545905).

Almost surely, 2^{3311111091809} is an apocalyptic number.

It is an amenable number.

3311111091809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3311111091809 is an equidigital number, since it uses as much as digits as its factorization.

3311111091809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 3311111091809 in words is "three trillion, three hundred eleven billion, one hundred eleven million, ninety-one thousand, eight hundred nine".