320200913 has 2 divisors, whose sum is σ = 320200914. Its totient is φ = 320200912.

The previous prime is 320200897. The next prime is 320200927. The reversal of 320200913 is 319002023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250177489 + 70023424 = 15817^2 + 8368^2 .

It is an emirp because it is prime and its reverse (319002023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320200913 - 2⁴ = 320200897 is a prime.

It is not a weakly prime, because it can be changed into another prime (320200943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160100456 + 160100457.

It is an arithmetic number, because the mean of its divisors is an integer number (160100457).

Almost surely, 2^320200913 is an apocalyptic number.

It is an amenable number.

320200913 is a deficient number, since it is larger than the sum of its proper divisors (1).

320200913 is an equidigital number, since it uses as much as digits as its factorization.

320200913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 320200913 is about 17894.1586278875. The cubic root of 320200913 is about 684.1334972213.

Adding to 320200913 its reverse (319002023), we get a palindrome (639202936).

The spelling of 320200913 in words is "three hundred twenty million, two hundred thousand, nine hundred thirteen".