312203321131312 has 20 divisors (see below), whose sum is σ = 651424237360960. Its totient is φ = 144093840522048.

The previous prime is 312203321131301. The next prime is 312203321131327. The reversal of 312203321131312 is 213131123302213.

It is a super-2 number, since 2×312203321131312² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750488752512 + ... + 750488752927.

It is an arithmetic number, because the mean of its divisors is an integer number (32571211868048).

Almost surely, 2^{312203321131312} is an apocalyptic number.

It is an amenable number.

312203321131312 is an abundant number, since it is smaller than the sum of its proper divisors (339220916229648).

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

312203321131312 is a wasteful number, since it uses less digits than its factorization.

312203321131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500977505460 (or 1500977505454 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 312203321131312 its reverse (213131123302213), we get a palindrome (525334444433525).

The spelling of 312203321131312 in words is "three hundred twelve trillion, two hundred three billion, three hundred twenty-one million, one hundred thirty-one thousand, three hundred twelve".