311213022330012 has 96 divisors (see below), whose sum is σ = 830899236142080. Its totient is φ = 89805838360320.

The previous prime is 311213022329977. The next prime is 311213022330017. The reversal of 311213022330012 is 210033220312113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311213022330017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677652687 + ... + 678111782.

It is an arithmetic number, because the mean of its divisors is an integer number (8655200376480).

Almost surely, 2^{311213022330012} is an apocalyptic number.

It is an amenable number.

311213022330012 is an abundant number, since it is smaller than the sum of its proper divisors (519686213812068).

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

311213022330012 is a wasteful number, since it uses less digits than its factorization.

311213022330012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355764571 (or 1355764569 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 311213022330012 its reverse (210033220312113), we get a palindrome (521246242642125).

The spelling of 311213022330012 in words is "three hundred eleven trillion, two hundred thirteen billion, twenty-two million, three hundred thirty thousand, twelve".