320975109 has 64 divisors (see below), whose sum is σ = 589478400. Its totient is φ = 169086528.

The previous prime is 320975093. The next prime is 320975117. The reversal of 320975109 is 901579023.

It is not a de Polignac number, because 320975109 - 2⁴ = 320975093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320975129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 414847 + ... + 415619.

It is an arithmetic number, because the mean of its divisors is an integer number (9210600).

Almost surely, 2^320975109 is an apocalyptic number.

320975109 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

320975109 is a deficient number, since it is larger than the sum of its proper divisors (268503291).

320975109 is an equidigital number, since it uses as much as digits as its factorization.

320975109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 320975109 is about 17915.7782136306. The cubic root of 320975109 is about 684.6844295628.

The spelling of 320975109 in words is "three hundred twenty million, nine hundred seventy-five thousand, one hundred nine".