312221424443244 has 24 divisors (see below), whose sum is σ = 729732878515200. Its totient is φ = 103900062221904.

The previous prime is 312221424443239. The next prime is 312221424443263. The reversal of 312221424443244 is 442344424122213.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 312221424443196 and 312221424443205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21718233244 + ... + 21718247619.

It is an arithmetic number, because the mean of its divisors is an integer number (30405536604800).

Almost surely, 2^{312221424443244} is an apocalyptic number.

It is an amenable number.

312221424443244 is an abundant number, since it is smaller than the sum of its proper divisors (417511454071956).

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

312221424443244 is a wasteful number, since it uses less digits than its factorization.

312221424443244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43436481469 (or 43436481467 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 42.

Adding to 312221424443244 its reverse (442344424122213), we get a palindrome (754565848565457).

The spelling of 312221424443244 in words is "three hundred twelve trillion, two hundred twenty-one billion, four hundred twenty-four million, four hundred forty-three thousand, two hundred forty-four".