321056331164 has 24 divisors (see below), whose sum is σ = 580021886976. Its totient is φ = 155336670000.

The previous prime is 321056331097. The next prime is 321056331173. The reversal of 321056331164 is 461133650123.

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, 1447889 + ... + 1654839.

It is an arithmetic number, because the mean of its divisors is an integer number (24167578624).

Almost surely, 2^321056331164 is an apocalyptic number.

It is an amenable number.

321056331164 is a deficient number, since it is larger than the sum of its proper divisors (258965555812).

321056331164 is a wasteful number, since it uses less digits than its factorization.

321056331164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219497 (or 219495 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 321056331164 its reverse (461133650123), we get a palindrome (782189981287).

The spelling of 321056331164 in words is "three hundred twenty-one billion, fifty-six million, three hundred thirty-one thousand, one hundred sixty-four".