311013101221311 has 4 divisors (see below), whose sum is σ = 414684134961752. Its totient is φ = 207342067480872.

The previous prime is 311013101221309. The next prime is 311013101221327. The reversal of 311013101221311 is 113122101310113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 311013101221311 - 2¹ = 311013101221309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311013101221811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51835516870216 + ... + 51835516870221.

It is an arithmetic number, because the mean of its divisors is an integer number (103671033740438).

Almost surely, 2^{311013101221311} is an apocalyptic number.

311013101221311 is a deficient number, since it is larger than the sum of its proper divisors (103671033740441).

311013101221311 is a wasteful number, since it uses less digits than its factorization.

311013101221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103671033740440.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 311013101221311 its reverse (113122101310113), we get a palindrome (424135202531424).

The spelling of 311013101221311 in words is "three hundred eleven trillion, thirteen billion, one hundred one million, two hundred twenty-one thousand, three hundred eleven".