320494723 has 2 divisors, whose sum is σ = 320494724. Its totient is φ = 320494722.

The previous prime is 320494711. The next prime is 320494729. The reversal of 320494723 is 327494023.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (327494023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320494723 is a prime.

It is not a weakly prime, because it can be changed into another prime (320494729) 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, 160247361 + 160247362.

It is an arithmetic number, because the mean of its divisors is an integer number (160247362).

Almost surely, 2^320494723 is an apocalyptic number.

320494723 is a deficient number, since it is larger than the sum of its proper divisors (1).

320494723 is an equidigital number, since it uses as much as digits as its factorization.

320494723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 320494723 is about 17902.3664078244. The cubic root of 320494723 is about 684.3426823573.

The spelling of 320494723 in words is "three hundred twenty million, four hundred ninety-four thousand, seven hundred twenty-three".