311122001012 has 12 divisors (see below), whose sum is σ = 545420383620. Its totient is φ = 155287605696.

The previous prime is 311122000993. The next prime is 311122001051. The reversal of 311122001012 is 210100221113.

It can be written as a sum of positive squares in 2 ways, for example, as 70545484816 + 240576516196 = 265604^2 + 490486^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68346143 + ... + 68350694.

It is an arithmetic number, because the mean of its divisors is an integer number (45451698635).

Almost surely, 2^311122001012 is an apocalyptic number.

It is an amenable number.

311122001012 is a deficient number, since it is larger than the sum of its proper divisors (234298382608).

311122001012 is a wasteful number, since it uses less digits than its factorization.

311122001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136697410 (or 136697408 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 311122001012 its reverse (210100221113), we get a palindrome (521222222125).

The spelling of 311122001012 in words is "three hundred eleven billion, one hundred twenty-two million, one thousand, twelve".