320113243 has 2 divisors, whose sum is σ = 320113244. Its totient is φ = 320113242.

The previous prime is 320113237. The next prime is 320113309. The reversal of 320113243 is 342311023.

It is a weak prime.

It is an emirp because it is prime and its reverse (342311023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320113243 - 2⁹ = 320112731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320113243.

It is not a weakly prime, because it can be changed into another prime (320113643) 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, 160056621 + 160056622.

It is an arithmetic number, because the mean of its divisors is an integer number (160056622).

Almost surely, 2^320113243 is an apocalyptic number.

320113243 is a deficient number, since it is larger than the sum of its proper divisors (1).

320113243 is an equidigital number, since it uses as much as digits as its factorization.

320113243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 320113243 is about 17891.7087780905. The cubic root of 320113243 is about 684.0710536574.

Adding to 320113243 its reverse (342311023), we get a palindrome (662424266).

It can be divided in two parts, 320113 and 243, that added together give a square (320356 = 566²).

The spelling of 320113243 in words is "three hundred twenty million, one hundred thirteen thousand, two hundred forty-three".