312321421443 has 8 divisors (see below), whose sum is σ = 416885677056. Its totient is φ = 207985723400.

The previous prime is 312321421427. The next prime is 312321421471. The reversal of 312321421443 is 344124123213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312321421443 - 2⁴ = 312321421427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312321421443.

It is not an unprimeable number, because it can be changed into a prime (312321421043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 57136203 + ... + 57141668.

It is an arithmetic number, because the mean of its divisors is an integer number (52110709632).

Almost surely, 2^312321421443 is an apocalyptic number.

312321421443 is a deficient number, since it is larger than the sum of its proper divisors (104564255613).

312321421443 is a wasteful number, since it uses less digits than its factorization.

312321421443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114278785.

The product of its digits is 13824, while the sum is 30.

Adding to 312321421443 its reverse (344124123213), we get a palindrome (656445544656).

The spelling of 312321421443 in words is "three hundred twelve billion, three hundred twenty-one million, four hundred twenty-one thousand, four hundred forty-three".