320311130209 has 12 divisors (see below), whose sum is σ = 372618422100. Its totient is φ = 274543852128.

The previous prime is 320311130197. The next prime is 320311130261. The reversal of 320311130209 is 902031113023.

It can be written as a sum of positive squares in 2 ways, for example, as 94261280400 + 226049849809 = 307020^2 + 475447^2 .

It is not a de Polignac number, because 320311130209 - 2⁵ = 320311130177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320311130299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1877727 + ... + 2041195.

It is an arithmetic number, because the mean of its divisors is an integer number (31051535175).

Almost surely, 2^320311130209 is an apocalyptic number.

It is an amenable number.

320311130209 is a deficient number, since it is larger than the sum of its proper divisors (52307291891).

320311130209 is a wasteful number, since it uses less digits than its factorization.

320311130209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203472 (or 203465 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 320311130209 in words is "three hundred twenty billion, three hundred eleven million, one hundred thirty thousand, two hundred nine".