311321240112 has 20 divisors (see below), whose sum is σ = 804246537080. Its totient is φ = 103773746688.

The previous prime is 311321240071. The next prime is 311321240141. The reversal of 311321240112 is 211042123113.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242929537 + ... + 3242929632.

It is an arithmetic number, because the mean of its divisors is an integer number (40212326854).

Almost surely, 2^311321240112 is an apocalyptic number.

It is an amenable number.

311321240112 is an abundant number, since it is smaller than the sum of its proper divisors (492925296968).

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

311321240112 is a wasteful number, since it uses less digits than its factorization.

311321240112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485859180 (or 6485859174 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 311321240112 its reverse (211042123113), we get a palindrome (522363363225).

The spelling of 311321240112 in words is "three hundred eleven billion, three hundred twenty-one million, two hundred forty thousand, one hundred twelve".