311223030202212 has 48 divisors (see below), whose sum is σ = 729027310314240. Its totient is φ = 103335277699072.

The previous prime is 311223030202211. The next prime is 311223030202243. The reversal of 311223030202212 is 212202030322113.

It is not an unprimeable number, because it can be changed into a prime (311223030202211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156905989 + ... + 158877107.

It is an arithmetic number, because the mean of its divisors is an integer number (15188068964880).

Almost surely, 2^{311223030202212} is an apocalyptic number.

It is an amenable number.

311223030202212 is an abundant number, since it is smaller than the sum of its proper divisors (417804280112028).

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

311223030202212 is a wasteful number, since it uses less digits than its factorization.

311223030202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022580 (or 2022578 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 311223030202212 its reverse (212202030322113), we get a palindrome (523425060524325).

The spelling of 311223030202212 in words is "three hundred eleven trillion, two hundred twenty-three billion, thirty million, two hundred two thousand, two hundred twelve".