311320101212 has 12 divisors (see below), whose sum is σ = 545128977960. Its totient is φ = 155568964656.

The previous prime is 311320101149. The next prime is 311320101221. The reversal of 311320101212 is 212101023113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22763798 + ... + 22777469.

It is an arithmetic number, because the mean of its divisors is an integer number (45427414830).

Almost surely, 2^311320101212 is an apocalyptic number.

It is an amenable number.

311320101212 is a deficient number, since it is larger than the sum of its proper divisors (233808876748).

311320101212 is a wasteful number, since it uses less digits than its factorization.

311320101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45542980 (or 45542978 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 311320101212 its reverse (212101023113), we get a palindrome (523421124325).

The spelling of 311320101212 in words is "three hundred eleven billion, three hundred twenty million, one hundred one thousand, two hundred twelve".