320053009 has 4 divisors (see below), whose sum is σ = 320474340. Its totient is φ = 319631680.

The previous prime is 320053007. The next prime is 320053049. The reversal of 320053009 is 900350023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900350023 = 97 ⋅9281959.

It can be written as a sum of positive squares in 2 ways, for example, as 4635409 + 315417600 = 2153^2 + 17760^2 .

It is a cyclic number.

It is not a de Polignac number, because 320053009 - 2¹ = 320053007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320053001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209524 + ... + 211045.

It is an arithmetic number, because the mean of its divisors is an integer number (80118585).

Almost surely, 2^320053009 is an apocalyptic number.

It is an amenable number.

320053009 is a deficient number, since it is larger than the sum of its proper divisors (421331).

320053009 is an equidigital number, since it uses as much as digits as its factorization.

320053009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421330.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 320053009 is about 17890.0254052363. The cubic root of 320053009 is about 684.0281449666.

The spelling of 320053009 in words is "three hundred twenty million, fifty-three thousand, nine".