320042923 has 2 divisors, whose sum is σ = 320042924. Its totient is φ = 320042922.

The previous prime is 320042917. The next prime is 320042941. The reversal of 320042923 is 329240023.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320042923 is a prime.

It is not a weakly prime, because it can be changed into another prime (320042903) 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, 160021461 + 160021462.

It is an arithmetic number, because the mean of its divisors is an integer number (160021462).

Almost surely, 2^320042923 is an apocalyptic number.

320042923 is a deficient number, since it is larger than the sum of its proper divisors (1).

320042923 is an equidigital number, since it uses as much as digits as its factorization.

320042923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 320042923 is about 17889.7435140921. The cubic root of 320042923 is about 684.0209595107.

Adding to 320042923 its reverse (329240023), we get a palindrome (649282946).

The spelling of 320042923 in words is "three hundred twenty million, forty-two thousand, nine hundred twenty-three".