312001432221344 has 24 divisors (see below), whose sum is σ = 614361595111488. Its totient is φ = 155973090605760.

The previous prime is 312001432221337. The next prime is 312001432221359. The reversal of 312001432221344 is 443122234100213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 312001432221344.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863113502 + ... + 863474909.

It is an arithmetic number, because the mean of its divisors is an integer number (25598399796312).

Almost surely, 2^{312001432221344} is an apocalyptic number.

It is an amenable number.

312001432221344 is a deficient number, since it is larger than the sum of its proper divisors (302360162890144).

312001432221344 is a wasteful number, since it uses less digits than its factorization.

312001432221344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726594068 (or 1726594060 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 312001432221344 its reverse (443122234100213), we get a palindrome (755123666321557).

The spelling of 312001432221344 in words is "three hundred twelve trillion, one billion, four hundred thirty-two million, two hundred twenty-one thousand, three hundred forty-four".