320546073 has 4 divisors (see below), whose sum is σ = 427394768. Its totient is φ = 213697380.

The previous prime is 320546069. The next prime is 320546087. The reversal of 320546073 is 370645023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 320546073 - 2² = 320546069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320546073.

It is not an unprimeable number, because it can be changed into a prime (320546573) 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 in 3 ways as a sum of consecutive naturals, for example, 53424343 + ... + 53424348.

It is an arithmetic number, because the mean of its divisors is an integer number (106848692).

Almost surely, 2^320546073 is an apocalyptic number.

It is an amenable number.

320546073 is a deficient number, since it is larger than the sum of its proper divisors (106848695).

320546073 is a wasteful number, since it uses less digits than its factorization.

320546073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106848694.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 320546073 is about 17903.8005183257. The cubic root of 320546073 is about 684.3792291059.

The spelling of 320546073 in words is "three hundred twenty million, five hundred forty-six thousand, seventy-three".