320716933 has 2 divisors, whose sum is σ = 320716934. Its totient is φ = 320716932.

The previous prime is 320716909. The next prime is 320716937. The reversal of 320716933 is 339617023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230979204 + 89737729 = 15198^2 + 9473^2 .

It is a cyclic number.

It is not a de Polignac number, because 320716933 - 2⁵ = 320716901 is a prime.

It is a super-2 number, since 2×320716933² = 205718702225852978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320716937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160358466 + 160358467.

It is an arithmetic number, because the mean of its divisors is an integer number (160358467).

Almost surely, 2^320716933 is an apocalyptic number.

It is an amenable number.

320716933 is a deficient number, since it is larger than the sum of its proper divisors (1).

320716933 is an equidigital number, since it uses as much as digits as its factorization.

320716933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 320716933 is about 17908.5714952366. The cubic root of 320716933 is about 684.5008052483.

The spelling of 320716933 in words is "three hundred twenty million, seven hundred sixteen thousand, nine hundred thirty-three".