311311331211 has 8 divisors (see below), whose sum is σ = 415268673424. Its totient is φ = 207447438240.

The previous prime is 311311331183. The next prime is 311311331213. The reversal of 311311331211 is 112133113113.

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

It is not a de Polignac number, because 311311331211 - 2⁵ = 311311331179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311311331213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23354536 + ... + 23367861.

It is an arithmetic number, because the mean of its divisors is an integer number (51908584178).

Almost surely, 2^311311331211 is an apocalyptic number.

311311331211 is a deficient number, since it is larger than the sum of its proper divisors (103957342213).

311311331211 is a wasteful number, since it uses less digits than its factorization.

311311331211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46724621.

The product of its digits is 162, while the sum is 21.

Adding to 311311331211 its reverse (112133113113), we get a palindrome (423444444324).

The spelling of 311311331211 in words is "three hundred eleven billion, three hundred eleven million, three hundred thirty-one thousand, two hundred eleven".