320331001 has 4 divisors (see below), whose sum is σ = 325760400. Its totient is φ = 314901604.

The previous prime is 320330999. The next prime is 320331019. The reversal of 320331001 is 100133023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100133023 = 127 ⋅788449.

It is a cyclic number.

It is not a de Polignac number, because 320331001 - 2¹ = 320330999 is a prime.

It is a super-2 number, since 2×320331001² = 205223900403324002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320331031) 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, 2714611 + ... + 2714728.

It is an arithmetic number, because the mean of its divisors is an integer number (81440100).

Almost surely, 2^320331001 is an apocalyptic number.

It is an amenable number.

320331001 is a deficient number, since it is larger than the sum of its proper divisors (5429399).

320331001 is an equidigital number, since it uses as much as digits as its factorization.

320331001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429398.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 320331001 is about 17897.7931879883. The cubic root of 320331001 is about 684.2261322984.

Adding to 320331001 its reverse (100133023), we get a palindrome (420464024).

The spelling of 320331001 in words is "three hundred twenty million, three hundred thirty-one thousand, one".