320030189 has 2 divisors, whose sum is σ = 320030190. Its totient is φ = 320030188.

The previous prime is 320030177. The next prime is 320030231. The reversal of 320030189 is 981030023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221027689 + 99002500 = 14867^2 + 9950^2 .

It is an emirp because it is prime and its reverse (981030023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320030189 - 2²⁴ = 303252973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320030149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160015094 + 160015095.

It is an arithmetic number, because the mean of its divisors is an integer number (160015095).

Almost surely, 2^320030189 is an apocalyptic number.

It is an amenable number.

320030189 is a deficient number, since it is larger than the sum of its proper divisors (1).

320030189 is an equidigital number, since it uses as much as digits as its factorization.

320030189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 320030189 is about 17889.3876083001. The cubic root of 320030189 is about 684.0118873543.

The spelling of 320030189 in words is "three hundred twenty million, thirty thousand, one hundred eighty-nine".