320546131209 has 24 divisors (see below), whose sum is σ = 516049503840. Its totient is φ = 190541351808.

The previous prime is 320546131177. The next prime is 320546131229. The reversal of 320546131209 is 902131645023.

320546131209 is a `hidden beast` number, since 3 + 20 + 5 + 4 + 613 + 12 + 0 + 9 = 666.

It is not a de Polignac number, because 320546131209 - 2⁵ = 320546131177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320546131229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55130587 + ... + 55136400.

It is an arithmetic number, because the mean of its divisors is an integer number (21502062660).

Almost surely, 2^320546131209 is an apocalyptic number.

It is an amenable number.

320546131209 is a deficient number, since it is larger than the sum of its proper divisors (195503372631).

320546131209 is a wasteful number, since it uses less digits than its factorization.

320546131209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110267029 (or 110267026 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 320546131209 in words is "three hundred twenty billion, five hundred forty-six million, one hundred thirty-one thousand, two hundred nine".