320012089 has 2 divisors, whose sum is σ = 320012090. Its totient is φ = 320012088.

The previous prime is 320012081. The next prime is 320012107. The reversal of 320012089 is 980210023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291282489 + 28729600 = 17067^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 320012089 - 2³ = 320012081 is a prime.

It is a super-2 number, since 2×320012089² = 204815474212287842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320012081) 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, 160006044 + 160006045.

It is an arithmetic number, because the mean of its divisors is an integer number (160006045).

Almost surely, 2^320012089 is an apocalyptic number.

It is an amenable number.

320012089 is a deficient number, since it is larger than the sum of its proper divisors (1).

320012089 is an equidigital number, since it uses as much as digits as its factorization.

320012089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 320012089 is about 17888.8817146293. The cubic root of 320012089 is about 683.9989918536.

The spelling of 320012089 in words is "three hundred twenty million, twelve thousand, eighty-nine".