20323313210309 has 2 divisors, whose sum is σ = 20323313210310. Its totient is φ = 20323313210308.

The previous prime is 20323313210297. The next prime is 20323313210329. The reversal of 20323313210309 is 90301231332302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18676831588900 + 1646481621409 = 4321670^2 + 1283153^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323313210309 - 2¹² = 20323313206213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20323313210329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161656605154 + 10161656605155.

It is an arithmetic number, because the mean of its divisors is an integer number (10161656605155).

Almost surely, 2^{20323313210309} is an apocalyptic number.

It is an amenable number.

20323313210309 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323313210309 is an equidigital number, since it uses as much as digits as its factorization.

20323313210309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 32.

The spelling of 20323313210309 in words is "twenty trillion, three hundred twenty-three billion, three hundred thirteen million, two hundred ten thousand, three hundred nine".