311121333112 has 16 divisors (see below), whose sum is σ = 583459052400. Its totient is φ = 155532252480.

The previous prime is 311121333091. The next prime is 311121333119. The reversal of 311121333112 is 211333121113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311121333119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505189 + ... + 3592852.

It is an arithmetic number, because the mean of its divisors is an integer number (36466190775).

Almost surely, 2^311121333112 is an apocalyptic number.

It is an amenable number.

311121333112 is a deficient number, since it is larger than the sum of its proper divisors (272337719288).

311121333112 is a wasteful number, since it uses less digits than its factorization.

311121333112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7103526 (or 7103522 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

Adding to 311121333112 its reverse (211333121113), we get a palindrome (522454454225).

It can be divided in two parts, 31112 and 1333112, that added together give a square (1364224 = 1168²).

The spelling of 311121333112 in words is "three hundred eleven billion, one hundred twenty-one million, three hundred thirty-three thousand, one hundred twelve".