320061009 has 4 divisors (see below), whose sum is σ = 426748016. Its totient is φ = 213374004.

The previous prime is 320060953. The next prime is 320061013. The reversal of 320061009 is 900160023.

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 320061009 - 2⁸ = 320060753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320061059) 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, 53343499 + ... + 53343504.

It is an arithmetic number, because the mean of its divisors is an integer number (106687004).

Almost surely, 2^320061009 is an apocalyptic number.

It is an amenable number.

320061009 is a deficient number, since it is larger than the sum of its proper divisors (106687007).

320061009 is a wasteful number, since it uses less digits than its factorization.

320061009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106687006.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 320061009 is about 17890.2489921186. The cubic root of 320061009 is about 684.0338442096.

The spelling of 320061009 in words is "three hundred twenty million, sixty-one thousand, nine".