321031027216 has 15 divisors (see below), whose sum is σ = 622002006381. Its totient is φ = 160514380416.

The previous prime is 321031027201. The next prime is 321031027253. The reversal of 321031027216 is 612720130123.

The square root of 321031027216 is 566596.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 311815027216 + 9216000000 = 558404^2 + 96000^2 .

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 2195560 + ... + 2337208.

Almost surely, 2^321031027216 is an apocalyptic number.

321031027216 is the 566596-th square number.

It is an amenable number.

321031027216 is a deficient number, since it is larger than the sum of its proper divisors (300970979165).

321031027216 is an frugal number, since it uses more digits than its factorization.

321031027216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283306 (or 141651 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 321031027216 its reverse (612720130123), we get a palindrome (933751157339).

The spelling of 321031027216 in words is "three hundred twenty-one billion, thirty-one million, twenty-seven thousand, two hundred sixteen".