320371243 has 2 divisors, whose sum is σ = 320371244. Its totient is φ = 320371242.

The previous prime is 320371237. The next prime is 320371277. The reversal of 320371243 is 342173023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320371243 - 2⁵ = 320371211 is a prime.

It is not a weakly prime, because it can be changed into another prime (320371213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160185621 + 160185622.

It is an arithmetic number, because the mean of its divisors is an integer number (160185622).

Almost surely, 2^320371243 is an apocalyptic number.

320371243 is a deficient number, since it is larger than the sum of its proper divisors (1).

320371243 is an equidigital number, since it uses as much as digits as its factorization.

320371243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 320371243 is about 17898.9173694947. The cubic root of 320371243 is about 684.2547833655.

The spelling of 320371243 in words is "three hundred twenty million, three hundred seventy-one thousand, two hundred forty-three".