320404001 has 2 divisors, whose sum is σ = 320404002. Its totient is φ = 320404000.

The previous prime is 320403991. The next prime is 320404033. The reversal of 320404001 is 100404023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278088976 + 42315025 = 16676^2 + 6505^2 .

It is a cyclic number.

It is not a de Polignac number, because 320404001 - 2¹⁰ = 320402977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320400001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160202000 + 160202001.

It is an arithmetic number, because the mean of its divisors is an integer number (160202001).

Almost surely, 2^320404001 is an apocalyptic number.

It is an amenable number.

320404001 is a deficient number, since it is larger than the sum of its proper divisors (1).

320404001 is an equidigital number, since it uses as much as digits as its factorization.

320404001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 320404001 is about 17899.8324293832. The cubic root of 320404001 is about 684.2781042833.

Adding to 320404001 its reverse (100404023), we get a palindrome (420808024).

The spelling of 320404001 in words is "three hundred twenty million, four hundred four thousand, one".