320211109 has 2 divisors, whose sum is σ = 320211110. Its totient is φ = 320211108.

The previous prime is 320211091. The next prime is 320211119. The reversal of 320211109 is 901112023.

Together with previous prime (320211091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256960900 + 63250209 = 16030^2 + 7953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320211109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320211119) 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 as a sum of consecutive naturals, namely, 160105554 + 160105555.

It is an arithmetic number, because the mean of its divisors is an integer number (160105555).

Almost surely, 2^320211109 is an apocalyptic number.

It is an amenable number.

320211109 is a deficient number, since it is larger than the sum of its proper divisors (1).

320211109 is an equidigital number, since it uses as much as digits as its factorization.

320211109 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 19.

The square root of 320211109 is about 17894.4435230604. The cubic root of 320211109 is about 684.1407586529.

The spelling of 320211109 in words is "three hundred twenty million, two hundred eleven thousand, one hundred nine".