320031220322213 has 4 divisors (see below), whose sum is σ = 321799348611468. Its totient is φ = 318263092032960.

The previous prime is 320031220322201. The next prime is 320031220322227. The reversal of 320031220322213 is 312223022130023.

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 72183409350724 + 247847810971489 = 8496082^2 + 15743183^2 .

It is a cyclic number.

It is not a de Polignac number, because 320031220322213 - 2⁴ = 320031220322197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320031220322293) 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, 884064144356 + ... + 884064144717.

It is an arithmetic number, because the mean of its divisors is an integer number (80449837152867).

Almost surely, 2^{320031220322213} is an apocalyptic number.

It is an amenable number.

320031220322213 is a deficient number, since it is larger than the sum of its proper divisors (1768128289255).

320031220322213 is a wasteful number, since it uses less digits than its factorization.

320031220322213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768128289254.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 320031220322213 its reverse (312223022130023), we get a palindrome (632254242452236).

The spelling of 320031220322213 in words is "three hundred twenty trillion, thirty-one billion, two hundred twenty million, three hundred twenty-two thousand, two hundred thirteen".