320123159 has 2 divisors, whose sum is σ = 320123160. Its totient is φ = 320123158.

The previous prime is 320123137. The next prime is 320123161. The reversal of 320123159 is 951321023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320123159 is a prime.

It is a Sophie Germain prime.

Together with 320123161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320123129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160061579 + 160061580.

It is an arithmetic number, because the mean of its divisors is an integer number (160061580).

Almost surely, 2^320123159 is an apocalyptic number.

320123159 is a deficient number, since it is larger than the sum of its proper divisors (1).

320123159 is an equidigital number, since it uses as much as digits as its factorization.

320123159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 320123159 is about 17891.9858875419. The cubic root of 320123159 is about 684.0781169688.

The spelling of 320123159 in words is "three hundred twenty million, one hundred twenty-three thousand, one hundred fifty-nine".