320444001 has 6 divisors (see below), whose sum is σ = 462863570. Its totient is φ = 213629328.

The previous prime is 320443973. The next prime is 320444009. The reversal of 320444001 is 100444023.

It can be written as a sum of positive squares in only one way, i.e., 196700625 + 123743376 = 14025^2 + 11124^2 .

It is not a de Polignac number, because 320444001 - 2⁵ = 320443969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320444009) 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 in 5 ways as a sum of consecutive naturals, for example, 17802436 + ... + 17802453.

Almost surely, 2^320444001 is an apocalyptic number.

It is an amenable number.

320444001 is a deficient number, since it is larger than the sum of its proper divisors (142419569).

320444001 is a wasteful number, since it uses less digits than its factorization.

320444001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35604895 (or 35604892 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 320444001 is about 17900.9497234085. The cubic root of 320444001 is about 684.3065787355.

Adding to 320444001 its reverse (100444023), we get a palindrome (420888024).

The spelling of 320444001 in words is "three hundred twenty million, four hundred forty-four thousand, one".