311013312212 has 12 divisors (see below), whose sum is σ = 544988509716. Its totient is φ = 155302309440.

The previous prime is 311013312199. The next prime is 311013312251. The reversal of 311013312212 is 212213310113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76327323076 + 234685989136 = 276274^2 + 484444^2 .

It is a congruent number.

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, 51083243 + ... + 51089330.

It is an arithmetic number, because the mean of its divisors is an integer number (45415709143).

Almost surely, 2^311013312212 is an apocalyptic number.

It is an amenable number.

311013312212 is a deficient number, since it is larger than the sum of its proper divisors (233975197504).

311013312212 is a wasteful number, since it uses less digits than its factorization.

311013312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102173338 (or 102173336 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311013312212 its reverse (212213310113), we get a palindrome (523226622325).

The spelling of 311013312212 in words is "three hundred eleven billion, thirteen million, three hundred twelve thousand, two hundred twelve".