321312443422 has 16 divisors (see below), whose sum is σ = 510820622640. Its totient is φ = 151057452928.

The previous prime is 321312443393. The next prime is 321312443443. The reversal of 321312443422 is 224344213123.

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, 4602433 + ... + 4671724.

It is an arithmetic number, because the mean of its divisors is an integer number (31926288915).

Almost surely, 2^321312443422 is an apocalyptic number.

321312443422 is a deficient number, since it is larger than the sum of its proper divisors (189508179218).

321312443422 is a wasteful number, since it uses less digits than its factorization.

321312443422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9275195.

The product of its digits is 27648, while the sum is 31.

Adding to 321312443422 its reverse (224344213123), we get a palindrome (545656656545).

The spelling of 321312443422 in words is "three hundred twenty-one billion, three hundred twelve million, four hundred forty-three thousand, four hundred twenty-two".