311224431301112 has 128 divisors (see below), whose sum is σ = 685522101398400. Its totient is φ = 129682335744000.

The previous prime is 311224431301111. The next prime is 311224431301129. The reversal of 311224431301112 is 211103134422113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311224431301111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 984065918 + ... + 984382130.

It is an arithmetic number, because the mean of its divisors is an integer number (5355641417175).

Almost surely, 2^{311224431301112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311224431301112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342761050699200).

311224431301112 is an abundant number, since it is smaller than the sum of its proper divisors (374297670097288).

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

311224431301112 is a wasteful number, since it uses less digits than its factorization.

311224431301112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317737 (or 317733 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 311224431301112 its reverse (211103134422113), we get a palindrome (522327565723225).

The spelling of 311224431301112 in words is "three hundred eleven trillion, two hundred twenty-four billion, four hundred thirty-one million, three hundred one thousand, one hundred twelve".