20323230240217 has 2 divisors, whose sum is σ = 20323230240218. Its totient is φ = 20323230240216.

The previous prime is 20323230240197. The next prime is 20323230240239. The reversal of 20323230240217 is 71204203232302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20122437526416 + 200792713801 = 4485804^2 + 448099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20323230240217 is a prime.

It is not a weakly prime, because it can be changed into another prime (20323230240517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161615120108 + 10161615120109.

It is an arithmetic number, because the mean of its divisors is an integer number (10161615120109).

Almost surely, 2^{20323230240217} is an apocalyptic number.

It is an amenable number.

20323230240217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323230240217 is an equidigital number, since it uses as much as digits as its factorization.

20323230240217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 31.

Adding to 20323230240217 its reverse (71204203232302), we get a palindrome (91527433472519).

The spelling of 20323230240217 in words is "twenty trillion, three hundred twenty-three billion, two hundred thirty million, two hundred forty thousand, two hundred seventeen".