311322201212 has 24 divisors (see below), whose sum is σ = 613514721792. Its totient is φ = 136945249200.

The previous prime is 311322201173. The next prime is 311322201221. The reversal of 311322201212 is 212102223113.

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, 114119678 + ... + 114122405.

It is an arithmetic number, because the mean of its divisors is an integer number (25563113408).

Almost surely, 2^311322201212 is an apocalyptic number.

It is an amenable number.

311322201212 is a deficient number, since it is larger than the sum of its proper divisors (302192520580).

311322201212 is a wasteful number, since it uses less digits than its factorization.

311322201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228242129 (or 228242127 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 311322201212 its reverse (212102223113), we get a palindrome (523424424325).

The spelling of 311322201212 in words is "three hundred eleven billion, three hundred twenty-two million, two hundred one thousand, two hundred twelve".