320513355013 has 2 divisors, whose sum is σ = 320513355014. Its totient is φ = 320513355012.

The previous prime is 320513355011. The next prime is 320513355047. The reversal of 320513355013 is 310553315023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203024138724 + 117489216289 = 450582^2 + 342767^2 .

It is a cyclic number.

It is not a de Polignac number, because 320513355013 - 2¹ = 320513355011 is a prime.

Together with 320513355011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320513355011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160256677506 + 160256677507.

It is an arithmetic number, because the mean of its divisors is an integer number (160256677507).

Almost surely, 2^320513355013 is an apocalyptic number.

It is an amenable number.

320513355013 is a deficient number, since it is larger than the sum of its proper divisors (1).

320513355013 is an equidigital number, since it uses as much as digits as its factorization.

320513355013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 31.

The spelling of 320513355013 in words is "three hundred twenty billion, five hundred thirteen million, three hundred fifty-five thousand, thirteen".