11731911211 has 2 divisors, whose sum is σ = 11731911212. Its totient is φ = 11731911210.

The previous prime is 11731911181. The next prime is 11731911263. The reversal of 11731911211 is 11211913711.

11731911211 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 11731911211 - 2⁵ = 11731911179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11731911211.

It is not a weakly prime, because it can be changed into another prime (11731941211) 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, 5865955605 + 5865955606.

It is an arithmetic number, because the mean of its divisors is an integer number (5865955606).

Almost surely, 2^11731911211 is an apocalyptic number.

11731911211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11731911211 is an equidigital number, since it uses as much as digits as its factorization.

11731911211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 28.

The spelling of 11731911211 in words is "eleven billion, seven hundred thirty-one million, nine hundred eleven thousand, two hundred eleven".