320413543 has 2 divisors, whose sum is σ = 320413544. Its totient is φ = 320413542.

The previous prime is 320413537. The next prime is 320413553. The reversal of 320413543 is 345314023.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320413543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320413553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160206771 + 160206772.

It is an arithmetic number, because the mean of its divisors is an integer number (160206772).

Almost surely, 2^320413543 is an apocalyptic number.

320413543 is a deficient number, since it is larger than the sum of its proper divisors (1).

320413543 is an equidigital number, since it uses as much as digits as its factorization.

320413543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 320413543 is about 17900.0989662069. The cubic root of 320413543 is about 684.2848970791.

Adding to 320413543 its reverse (345314023), we get a palindrome (665727566).

The spelling of 320413543 in words is "three hundred twenty million, four hundred thirteen thousand, five hundred forty-three".