20310001012321 has 2 divisors, whose sum is σ = 20310001012322. Its totient is φ = 20310001012320.

The previous prime is 20310001012307. The next prime is 20310001012337. The reversal of 20310001012321 is 12321010001302.

It is an a-pointer prime, because the next prime (20310001012337) can be obtained adding 20310001012321 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14474684402721 + 5835316609600 = 3804561^2 + 2415640^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310001012321 - 2⁷ = 20310001012193 is a prime.

It is a super-3 number, since 3×20310001012321³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 20310001012295 and 20310001012304.

It is not a weakly prime, because it can be changed into another prime (20310001012121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155000506160 + 10155000506161.

It is an arithmetic number, because the mean of its divisors is an integer number (10155000506161).

Almost surely, 2^{20310001012321} is an apocalyptic number.

It is an amenable number.

20310001012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310001012321 is an equidigital number, since it uses as much as digits as its factorization.

20310001012321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20310001012321 its reverse (12321010001302), we get a palindrome (32631011013623).

The spelling of 20310001012321 in words is "twenty trillion, three hundred ten billion, one million, twelve thousand, three hundred twenty-one".