320403023 has 6 divisors (see below), whose sum is σ = 338154264. Its totient is φ = 303539364.

The previous prime is 320402989. The next prime is 320403053. The reversal of 320403023 is 320304023.

It is not a de Polignac number, because 320403023 - 2⁶ = 320402959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320402992 and 320403010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320403053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 443411 + ... + 444132.

It is an arithmetic number, because the mean of its divisors is an integer number (56359044).

Almost surely, 2^320403023 is an apocalyptic number.

320403023 is a deficient number, since it is larger than the sum of its proper divisors (17751241).

320403023 is an equidigital number, since it uses as much as digits as its factorization.

320403023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887581 (or 887562 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 320403023 is about 17899.8051106709. The cubic root of 320403023 is about 684.2774080533.

Adding to 320403023 its reverse (320304023), we get a palindrome (640707046).

The spelling of 320403023 in words is "three hundred twenty million, four hundred three thousand, twenty-three".