211232311985 has 16 divisors (see below), whose sum is σ = 261692577792. Its totient is φ = 163557806400.

The previous prime is 211232311981. The next prime is 211232311991. The reversal of 211232311985 is 589113232112.

211232311985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211232311985 - 2² = 211232311981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211232311981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2953661 + ... + 3024330.

It is an arithmetic number, because the mean of its divisors is an integer number (16355786112).

Almost surely, 2^211232311985 is an apocalyptic number.

It is an amenable number.

211232311985 is a deficient number, since it is larger than the sum of its proper divisors (50460265807).

211232311985 is a wasteful number, since it uses less digits than its factorization.

211232311985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978224.

The product of its digits is 25920, while the sum is 38.

The spelling of 211232311985 in words is "two hundred eleven billion, two hundred thirty-two million, three hundred eleven thousand, nine hundred eighty-five".