320823017 has 4 divisors (see below), whose sum is σ = 324427860. Its totient is φ = 317218176.

The previous prime is 320822993. The next prime is 320823023. The reversal of 320823017 is 710328023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145419481 + 175403536 = 12059^2 + 13244^2 .

It is a cyclic number.

It is not a de Polignac number, because 320823017 - 2²⁴ = 304045801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320823047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1802288 + ... + 1802465.

It is an arithmetic number, because the mean of its divisors is an integer number (81106965).

Almost surely, 2^320823017 is an apocalyptic number.

It is an amenable number.

320823017 is a deficient number, since it is larger than the sum of its proper divisors (3604843).

320823017 is an equidigital number, since it uses as much as digits as its factorization.

320823017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604842.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 320823017 is about 17911.5330722973. The cubic root of 320823017 is about 684.5762680330.

The spelling of 320823017 in words is "three hundred twenty million, eight hundred twenty-three thousand, seventeen".