311211020212 has 24 divisors (see below), whose sum is σ = 551334897792. Its totient is φ = 153687811200.

The previous prime is 311211020209. The next prime is 311211020231. The reversal of 311211020212 is 212020112113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076412 + ... + 1334572.

It is an arithmetic number, because the mean of its divisors is an integer number (22972287408).

Almost surely, 2^311211020212 is an apocalyptic number.

It is an amenable number.

311211020212 is a deficient number, since it is larger than the sum of its proper divisors (240123877580).

311211020212 is a wasteful number, since it uses less digits than its factorization.

311211020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261879 (or 261877 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 311211020212 its reverse (212020112113), we get a palindrome (523231132325).

The spelling of 311211020212 in words is "three hundred eleven billion, two hundred eleven million, twenty thousand, two hundred twelve".