312331133212 has 24 divisors (see below), whose sum is σ = 624750386400. Its totient is φ = 133837317120.

The previous prime is 312331133209. The next prime is 312331133237. The reversal of 312331133212 is 212331133213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583837 + ... + 982612.

It is an arithmetic number, because the mean of its divisors is an integer number (26031266100).

Almost surely, 2^312331133212 is an apocalyptic number.

It is an amenable number.

312331133212 is an abundant number, since it is smaller than the sum of its proper divisors (312419253188).

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

312331133212 is a wasteful number, since it uses less digits than its factorization.

312331133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573581 (or 1573579 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 312331133212 its reverse (212331133213), we get a palindrome (524662266425).

Subtracting from 312331133212 its reverse (212331133213), we obtain a palindrome (99999999999).

The spelling of 312331133212 in words is "three hundred twelve billion, three hundred thirty-one million, one hundred thirty-three thousand, two hundred twelve".