320000002109 has 2 divisors, whose sum is σ = 320000002110. Its totient is φ = 320000002108.

The previous prime is 320000002097. The next prime is 320000002187. The reversal of 320000002109 is 901200000023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308635802500 + 11364199609 = 555550^2 + 106603^2 .

It is a cyclic number.

It is not a de Polignac number, because 320000002109 - 2²⁸ = 319731566653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320000032109) 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 as a sum of consecutive naturals, namely, 160000001054 + 160000001055.

It is an arithmetic number, because the mean of its divisors is an integer number (160000001055).

Almost surely, 2^320000002109 is an apocalyptic number.

It is an amenable number.

320000002109 is a deficient number, since it is larger than the sum of its proper divisors (1).

320000002109 is an equidigital number, since it uses as much as digits as its factorization.

320000002109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The spelling of 320000002109 in words is "three hundred twenty billion, two thousand, one hundred nine".