321032320321 has 4 divisors (see below), whose sum is σ = 321256349892. Its totient is φ = 320808290752.

The previous prime is 321032320237. The next prime is 321032320327. The reversal of 321032320321 is 123023230123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160821050625 + 160211269696 = 401025^2 + 400264^2 .

It is a cyclic number.

It is not a de Polignac number, because 321032320321 - 2⁹ = 321032319809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321032320292 and 321032320301.

It is not an unprimeable number, because it can be changed into a prime (321032320327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112012636 + ... + 112015501.

It is an arithmetic number, because the mean of its divisors is an integer number (80314087473).

Almost surely, 2^321032320321 is an apocalyptic number.

It is an amenable number.

321032320321 is a deficient number, since it is larger than the sum of its proper divisors (224029571).

321032320321 is a wasteful number, since it uses less digits than its factorization.

321032320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224029570.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 321032320321 its reverse (123023230123), we get a palindrome (444055550444).

The spelling of 321032320321 in words is "three hundred twenty-one billion, thirty-two million, three hundred twenty thousand, three hundred twenty-one".