311313020212 has 48 divisors (see below), whose sum is σ = 556012800000. Its totient is φ = 152472165984.

The previous prime is 311313020201. The next prime is 311313020243. The reversal of 311313020212 is 212020313113.

It is a self number, because there is not a number n which added to its sum of digits gives 311313020212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92678589 + ... + 92681947.

It is an arithmetic number, because the mean of its divisors is an integer number (11583600000).

Almost surely, 2^311313020212 is an apocalyptic number.

It is an amenable number.

311313020212 is a deficient number, since it is larger than the sum of its proper divisors (244699779788).

311313020212 is a wasteful number, since it uses less digits than its factorization.

311313020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708 (or 4706 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311313020212 its reverse (212020313113), we get a palindrome (523333333325).

The spelling of 311313020212 in words is "three hundred eleven billion, three hundred thirteen million, twenty thousand, two hundred twelve".