320601073 has 4 divisors (see below), whose sum is σ = 345262708. Its totient is φ = 295939440.

The previous prime is 320601059. The next prime is 320601091. The reversal of 320601073 is 370106023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370106023 = 7 ⋅52872289.

It can be written as a sum of positive squares in 2 ways, for example, as 113039424 + 207561649 = 10632^2 + 14407^2 .

It is a cyclic number.

It is not a de Polignac number, because 320601073 - 2¹⁷ = 320470001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320601023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12330798 + ... + 12330823.

It is an arithmetic number, because the mean of its divisors is an integer number (86315677).

Almost surely, 2^320601073 is an apocalyptic number.

It is an amenable number.

320601073 is a deficient number, since it is larger than the sum of its proper divisors (24661635).

320601073 is a wasteful number, since it uses less digits than its factorization.

320601073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24661634.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 320601073 is about 17905.3364391737. The cubic root of 320601073 is about 684.4183692983.

Adding to 320601073 its reverse (370106023), we get a palindrome (690707096).

It can be divided in two parts, 32060 and 1073, that added together give a palindrome (33133).

The spelling of 320601073 in words is "three hundred twenty million, six hundred one thousand, seventy-three".