20120303317 has 2 divisors, whose sum is σ = 20120303318. Its totient is φ = 20120303316.

The previous prime is 20120303227. The next prime is 20120303389. The reversal of 20120303317 is 71330302102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18178050276 + 1942253041 = 134826^2 + 44071^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120303317 - 2¹⁵ = 20120270549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120303417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060151658 + 10060151659.

It is an arithmetic number, because the mean of its divisors is an integer number (10060151659).

Almost surely, 2^20120303317 is an apocalyptic number.

It is an amenable number.

20120303317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120303317 is an equidigital number, since it uses as much as digits as its factorization.

20120303317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

Adding to 20120303317 its reverse (71330302102), we get a palindrome (91450605419).

The spelling of 20120303317 in words is "twenty billion, one hundred twenty million, three hundred three thousand, three hundred seventeen".