312221231113312 has 48 divisors (see below), whose sum is σ = 620205649846272. Its totient is φ = 154711383765120.

The previous prime is 312221231113279. The next prime is 312221231113321. The reversal of 312221231113312 is 213311132122213.

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, 38463498 + ... + 45868105.

It is an arithmetic number, because the mean of its divisors is an integer number (12920951038464).

Almost surely, 2^{312221231113312} is an apocalyptic number.

312221231113312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

312221231113312 is a deficient number, since it is larger than the sum of its proper divisors (307984418732960).

312221231113312 is a wasteful number, since it uses less digits than its factorization.

312221231113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84332651 (or 84332643 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

Adding to 312221231113312 its reverse (213311132122213), we get a palindrome (525532363235525).

The spelling of 312221231113312 in words is "three hundred twelve trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred thirteen thousand, three hundred twelve".