320705452913 has 2 divisors, whose sum is σ = 320705452914. Its totient is φ = 320705452912.

The previous prime is 320705452801. The next prime is 320705452919. The reversal of 320705452913 is 319254507023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314802911329 + 5902541584 = 561073^2 + 76828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320705452913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (320705452919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160352726456 + 160352726457.

It is an arithmetic number, because the mean of its divisors is an integer number (160352726457).

Almost surely, 2^320705452913 is an apocalyptic number.

It is an amenable number.

320705452913 is a deficient number, since it is larger than the sum of its proper divisors (1).

320705452913 is an equidigital number, since it uses as much as digits as its factorization.

320705452913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 41.

Adding to 320705452913 its reverse (319254507023), we get a palindrome (639959959936).

The spelling of 320705452913 in words is "three hundred twenty billion, seven hundred five million, four hundred fifty-two thousand, nine hundred thirteen".