20323212017 has 2 divisors, whose sum is σ = 20323212018. Its totient is φ = 20323212016.

The previous prime is 20323212001. The next prime is 20323212023. The reversal of 20323212017 is 71021232302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16363782241 + 3959429776 = 127921^2 + 62924^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323212017 - 2⁴ = 20323212001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323211983 and 20323212001.

It is not a weakly prime, because it can be changed into another prime (20323212067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161606008 + 10161606009.

It is an arithmetic number, because the mean of its divisors is an integer number (10161606009).

Almost surely, 2^20323212017 is an apocalyptic number.

It is an amenable number.

20323212017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323212017 is an equidigital number, since it uses as much as digits as its factorization.

20323212017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 20323212017 its reverse (71021232302), we get a palindrome (91344444319).

The spelling of 20323212017 in words is "twenty billion, three hundred twenty-three million, two hundred twelve thousand, seventeen".