11131111939 has 2 divisors, whose sum is σ = 11131111940. Its totient is φ = 11131111938.

The previous prime is 11131111921. The next prime is 11131111969. The reversal of 11131111939 is 93911113111.

11131111939 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 is a cyclic number.

It is not a de Polignac number, because 11131111939 - 2¹³ = 11131103747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11131111939.

It is not a weakly prime, because it can be changed into another prime (11131111969) 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, 5565555969 + 5565555970.

It is an arithmetic number, because the mean of its divisors is an integer number (5565555970).

Almost surely, 2^11131111939 is an apocalyptic number.

11131111939 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131111939 is an equidigital number, since it uses as much as digits as its factorization.

11131111939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 729, while the sum is 31.

The spelling of 11131111939 in words is "eleven billion, one hundred thirty-one million, one hundred eleven thousand, nine hundred thirty-nine".