312311323113212 has 12 divisors (see below), whose sum is σ = 546803718738816. Its totient is φ = 156081689187840.

The previous prime is 312311323113203. The next prime is 312311323113217. The reversal of 312311323113212 is 212311323113213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312311323113217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18493082693 + ... + 18493099580.

It is an arithmetic number, because the mean of its divisors is an integer number (45566976561568).

Almost surely, 2^{312311323113212} is an apocalyptic number.

It is an amenable number.

312311323113212 is a deficient number, since it is larger than the sum of its proper divisors (234492395625604).

312311323113212 is a wasteful number, since it uses less digits than its factorization.

312311323113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36986184388 (or 36986184386 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

Adding to 312311323113212 its reverse (212311323113213), we get a palindrome (524622646226425).

Subtracting from 312311323113212 its reverse (212311323113213), we obtain a palindrome (99999999999999).

The spelling of 312311323113212 in words is "three hundred twelve trillion, three hundred eleven billion, three hundred twenty-three million, one hundred thirteen thousand, two hundred twelve".