320646023 has 2 divisors, whose sum is σ = 320646024. Its totient is φ = 320646022.

The previous prime is 320646019. The next prime is 320646031.

320646023 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 320646023 - 2² = 320646019 is a prime.

It is equal to p_17308160 and since 320646023 and 17308160 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 320645983 and 320646001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320646043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160323011 + 160323012.

It is an arithmetic number, because the mean of its divisors is an integer number (160323012).

Almost surely, 2^320646023 is an apocalyptic number.

320646023 is a deficient number, since it is larger than the sum of its proper divisors (1).

320646023 is an equidigital number, since it uses as much as digits as its factorization.

320646023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 320646023 is about 17906.5916075617. The cubic root of 320646023 is about 684.4503541861.

The spelling of 320646023 in words is "three hundred twenty million, six hundred forty-six thousand, twenty-three".