311320203211 has 8 divisors (see below), whose sum is σ = 313516900880. Its totient is φ = 309127002912.

The previous prime is 311320203191. The next prime is 311320203251. The reversal of 311320203211 is 112302023113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311320203211 - 2¹¹ = 311320201163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311320203251) 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 7 ways as a sum of consecutive naturals, for example, 695556 + ... + 1051873.

It is an arithmetic number, because the mean of its divisors is an integer number (39189612610).

Almost surely, 2^311320203211 is an apocalyptic number.

311320203211 is a deficient number, since it is larger than the sum of its proper divisors (2196697669).

311320203211 is a wasteful number, since it uses less digits than its factorization.

311320203211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748685.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311320203211 its reverse (112302023113), we get a palindrome (423622226324).

The spelling of 311320203211 in words is "three hundred eleven billion, three hundred twenty million, two hundred three thousand, two hundred eleven".