320323401 has 12 divisors (see below), whose sum is σ = 489906612. Its totient is φ = 200987136.

The previous prime is 320323351. The next prime is 320323411. The reversal of 320323401 is 104323023.

320323401 is a `hidden beast` number, since 320 + 3 + 2 + 340 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 160275600 + 160047801 = 12660^2 + 12651^2 .

It is not a de Polignac number, because 320323401 - 2¹⁸ = 320061257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320323411) 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 in 11 ways as a sum of consecutive naturals, for example, 1046656 + ... + 1046961.

It is an arithmetic number, because the mean of its divisors is an integer number (40825551).

Almost surely, 2^320323401 is an apocalyptic number.

It is an amenable number.

320323401 is a deficient number, since it is larger than the sum of its proper divisors (169583211).

320323401 is a wasteful number, since it uses less digits than its factorization.

320323401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093640 (or 2093637 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320323401 is about 17897.5808700506. The cubic root of 320323401 is about 684.2207210626.

Adding to 320323401 its reverse (104323023), we get a palindrome (424646424).

The spelling of 320323401 in words is "three hundred twenty million, three hundred twenty-three thousand, four hundred one".