320403001 has 4 divisors (see below), whose sum is σ = 320553972. Its totient is φ = 320252032.

The previous prime is 320402989. The next prime is 320403053. The reversal of 320403001 is 100304023.

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 91183401 + 229219600 = 9549^2 + 15140^2 .

It is a cyclic number.

It is not a de Polignac number, because 320403001 - 2⁵ = 320402969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320403401) 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, 72256 + ... + 76561.

It is an arithmetic number, because the mean of its divisors is an integer number (80138493).

Almost surely, 2^320403001 is an apocalyptic number.

It is an amenable number.

320403001 is a deficient number, since it is larger than the sum of its proper divisors (150971).

320403001 is a wasteful number, since it uses less digits than its factorization.

320403001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150970.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320403001 is about 17899.8044961391. The cubic root of 320403001 is about 684.2773923916.

Adding to 320403001 its reverse (100304023), we get a palindrome (420707024).

The spelling of 320403001 in words is "three hundred twenty million, four hundred three thousand, one".