320123001202189 has 2 divisors, whose sum is σ = 320123001202190. Its totient is φ = 320123001202188.

The previous prime is 320123001202153. The next prime is 320123001202261. The reversal of 320123001202189 is 981202100321023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227190354937225 + 92932646264964 = 15072835^2 + 9640158^2 .

It is a cyclic number.

It is not a de Polignac number, because 320123001202189 - 2¹⁹ = 320123000677901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320123001202289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160061500601094 + 160061500601095.

It is an arithmetic number, because the mean of its divisors is an integer number (160061500601095).

Almost surely, 2^{320123001202189} is an apocalyptic number.

It is an amenable number.

320123001202189 is a deficient number, since it is larger than the sum of its proper divisors (1).

320123001202189 is an equidigital number, since it uses as much as digits as its factorization.

320123001202189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 320123001202189 in words is "three hundred twenty trillion, one hundred twenty-three billion, one million, two hundred two thousand, one hundred eighty-nine".