311122203312 has 20 divisors (see below), whose sum is σ = 803732358680. Its totient is φ = 103707401088.

The previous prime is 311122203307. The next prime is 311122203341. The reversal of 311122203312 is 213302221113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3240856237 + ... + 3240856332.

It is an arithmetic number, because the mean of its divisors is an integer number (40186617934).

Almost surely, 2^311122203312 is an apocalyptic number.

It is an amenable number.

311122203312 is an abundant number, since it is smaller than the sum of its proper divisors (492610155368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311122203312 is a wasteful number, since it uses less digits than its factorization.

311122203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6481712580 (or 6481712574 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 311122203312 its reverse (213302221113), we get a palindrome (524424424425).

The spelling of 311122203312 in words is "three hundred eleven billion, one hundred twenty-two million, two hundred three thousand, three hundred twelve".