311211331111112 has 16 divisors (see below), whose sum is σ = 603642668103900. Its totient is φ = 150239952950080.

The previous prime is 311211331111111. The next prime is 311211331111117. The reversal of 311211331111112 is 211111133112113.

It can be written as a sum of positive squares in 2 ways, for example, as 310825150894756 + 386180216356 = 17630234^2 + 621434^2 .

It is a super-2 number, since 2×311211331111112² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311211331111111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670714075439 + ... + 670714075902.

Almost surely, 2^{311211331111112} is an apocalyptic number.

It is an amenable number.

311211331111112 is a deficient number, since it is larger than the sum of its proper divisors (292431336992788).

311211331111112 is a wasteful number, since it uses less digits than its factorization.

311211331111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341428151376 (or 1341428151372 counting only the distinct ones).

The product of its digits is 108, while the sum is 23.

Adding to 311211331111112 its reverse (211111133112113), we get a palindrome (522322464223225).

The spelling of 311211331111112 in words is "three hundred eleven trillion, two hundred eleven billion, three hundred thirty-one million, one hundred eleven thousand, one hundred twelve".