320535073 has 8 divisors (see below), whose sum is σ = 340683200. Its totient is φ = 300714768.

The previous prime is 320535067. The next prime is 320535143. The reversal of 320535073 is 370535023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320535073 - 2⁹ = 320534561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320535473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79938 + ... + 83851.

It is an arithmetic number, because the mean of its divisors is an integer number (42585400).

Almost surely, 2^320535073 is an apocalyptic number.

It is an amenable number.

320535073 is a deficient number, since it is larger than the sum of its proper divisors (20148127).

320535073 is a wasteful number, since it uses less digits than its factorization.

320535073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163911.

The product of its (nonzero) digits is 9450, while the sum is 28.

The square root of 320535073 is about 17903.4933183443. The cubic root of 320535073 is about 684.3714005301.

The spelling of 320535073 in words is "three hundred twenty million, five hundred thirty-five thousand, seventy-three".