320310132221 has 2 divisors, whose sum is σ = 320310132222. Its totient is φ = 320310132220.

The previous prime is 320310132187. The next prime is 320310132251. The reversal of 320310132221 is 122231013023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215123426596 + 105186705625 = 463814^2 + 324325^2 .

It is a cyclic number.

It is not a de Polignac number, because 320310132221 - 2¹⁸ = 320309870077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320310132193 and 320310132202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320310132251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160155066110 + 160155066111.

It is an arithmetic number, because the mean of its divisors is an integer number (160155066111).

Almost surely, 2^320310132221 is an apocalyptic number.

It is an amenable number.

320310132221 is a deficient number, since it is larger than the sum of its proper divisors (1).

320310132221 is an equidigital number, since it uses as much as digits as its factorization.

320310132221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 320310132221 its reverse (122231013023), we get a palindrome (442541145244).

The spelling of 320310132221 in words is "three hundred twenty billion, three hundred ten million, one hundred thirty-two thousand, two hundred twenty-one".