320500001 has 4 divisors (see below), whose sum is σ = 320902932. Its totient is φ = 320097072.

The previous prime is 320499983. The next prime is 320500007. The reversal of 320500001 is 100005023.

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 257281600 + 63218401 = 16040^2 + 7951^2 .

It is a cyclic number.

It is not a de Polignac number, because 320500001 - 2⁶ = 320499937 is a prime.

It is a super-4 number, since 4×320500001⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320500007) 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, 200270 + ... + 201863.

It is an arithmetic number, because the mean of its divisors is an integer number (80225733).

Almost surely, 2^320500001 is an apocalyptic number.

It is an amenable number.

320500001 is a deficient number, since it is larger than the sum of its proper divisors (402931).

320500001 is an equidigital number, since it uses as much as digits as its factorization.

320500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402930.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 320500001 is about 17902.5138178972. The cubic root of 320500001 is about 684.3464389879.

Adding to 320500001 its reverse (100005023), we get a palindrome (420505024).

The spelling of 320500001 in words is "three hundred twenty million, five hundred thousand, one".