20312300323321 has 2 divisors, whose sum is σ = 20312300323322. Its totient is φ = 20312300323320.

The previous prime is 20312300323309. The next prime is 20312300323361. The reversal of 20312300323321 is 12332300321302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17614296969721 + 2698003353600 = 4196939^2 + 1642560^2 .

It is a cyclic number.

It is not a de Polignac number, because 20312300323321 - 2⁷ = 20312300323193 is a prime.

It is a super-2 number, since 2×20312300323321² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20312300323361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156150161660 + 10156150161661.

It is an arithmetic number, because the mean of its divisors is an integer number (10156150161661).

Almost surely, 2^{20312300323321} is an apocalyptic number.

It is an amenable number.

20312300323321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312300323321 is an equidigital number, since it uses as much as digits as its factorization.

20312300323321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20312300323321 its reverse (12332300321302), we get a palindrome (32644600644623).

The spelling of 20312300323321 in words is "twenty trillion, three hundred twelve billion, three hundred million, three hundred twenty-three thousand, three hundred twenty-one".