311222331232312 has 32 divisors (see below), whose sum is σ = 602396761006080. Its totient is φ = 150583710941280.

The previous prime is 311222331232283. The next prime is 311222331232333. The reversal of 311222331232312 is 213232133222113.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27412008 + ... + 37065655.

It is an arithmetic number, because the mean of its divisors is an integer number (18824898781440).

Almost surely, 2^{311222331232312} is an apocalyptic number.

It is an amenable number.

311222331232312 is a deficient number, since it is larger than the sum of its proper divisors (291174429773768).

311222331232312 is a wasteful number, since it uses less digits than its factorization.

311222331232312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64497163 (or 64497159 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

Adding to 311222331232312 its reverse (213232133222113), we get a palindrome (524454464454425).

The spelling of 311222331232312 in words is "three hundred eleven trillion, two hundred twenty-two billion, three hundred thirty-one million, two hundred thirty-two thousand, three hundred twelve".