320830073 has 2 divisors, whose sum is σ = 320830074. Its totient is φ = 320830072.

The previous prime is 320830061. The next prime is 320830087. The reversal of 320830073 is 370038023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313006864 + 7823209 = 17692^2 + 2797^2 .

It is a cyclic number.

It is not a de Polignac number, because 320830073 - 2²⁴ = 304052857 is a prime.

It is not a weakly prime, because it can be changed into another prime (320830033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160415036 + 160415037.

It is an arithmetic number, because the mean of its divisors is an integer number (160415037).

Almost surely, 2^320830073 is an apocalyptic number.

It is an amenable number.

320830073 is a deficient number, since it is larger than the sum of its proper divisors (1).

320830073 is an equidigital number, since it uses as much as digits as its factorization.

320830073 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 26.

The square root of 320830073 is about 17911.7300392787. The cubic root of 320830073 is about 684.5812867240.

Adding to 320830073 its reverse (370038023), we get a palindrome (690868096).

The spelling of 320830073 in words is "three hundred twenty million, eight hundred thirty thousand, seventy-three".