20310103321 has 2 divisors, whose sum is σ = 20310103322. Its totient is φ = 20310103320.

The previous prime is 20310103309. The next prime is 20310103351. The reversal of 20310103321 is 12330101302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19688299225 + 621804096 = 140315^2 + 24936^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310103321 - 2²⁷ = 20175885593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20310103295 and 20310103304.

It is not a weakly prime, because it can be changed into another prime (20310103351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155051660 + 10155051661.

It is an arithmetic number, because the mean of its divisors is an integer number (10155051661).

Almost surely, 2^20310103321 is an apocalyptic number.

It is an amenable number.

20310103321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310103321 is an equidigital number, since it uses as much as digits as its factorization.

20310103321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20310103321 its reverse (12330101302), we get a palindrome (32640204623).

The spelling of 20310103321 in words is "twenty billion, three hundred ten million, one hundred three thousand, three hundred twenty-one".