11311109989 has 2 divisors, whose sum is σ = 11311109990. Its totient is φ = 11311109988.

The previous prime is 11311109983. The next prime is 11311110029. The reversal of 11311109989 is 98990111311.

11311109989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10724259364 + 586850625 = 103558^2 + 24225^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311109989 - 2¹⁹ = 11310585701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311109983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655554994 + 5655554995.

It is an arithmetic number, because the mean of its divisors is an integer number (5655554995).

Almost surely, 2^11311109989 is an apocalyptic number.

It is an amenable number.

11311109989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311109989 is an equidigital number, since it uses as much as digits as its factorization.

11311109989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 43.

The spelling of 11311109989 in words is "eleven billion, three hundred eleven million, one hundred nine thousand, nine hundred eighty-nine".