311223213313111 has 8 divisors (see below), whose sum is σ = 339865888981248. Its totient is φ = 282638813691000.

The previous prime is 311223213313073. The next prime is 311223213313127. The reversal of 311223213313111 is 111313312322113.

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 311223213313111 - 2³¹ = 311221065829463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311223213313111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311223213313151) 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, 14569000335 + ... + 14569021696.

It is an arithmetic number, because the mean of its divisors is an integer number (42483236122656).

Almost surely, 2^{311223213313111} is an apocalyptic number.

311223213313111 is a deficient number, since it is larger than the sum of its proper divisors (28642675668137).

311223213313111 is a wasteful number, since it uses less digits than its factorization.

311223213313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29138023013.

The product of its digits is 1944, while the sum is 28.

Adding to 311223213313111 its reverse (111313312322113), we get a palindrome (422536525635224).

The spelling of 311223213313111 in words is "three hundred eleven trillion, two hundred twenty-three billion, two hundred thirteen million, three hundred thirteen thousand, one hundred eleven".