320023001 has 2 divisors, whose sum is σ = 320023002. Its totient is φ = 320023000.

The previous prime is 320022979. The next prime is 320023003. The reversal of 320023001 is 100320023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309936025 + 10086976 = 17605^2 + 3176^2 .

It is an emirp because it is prime and its reverse (100320023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320023001 is a prime.

Together with 320023003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320023003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160011500 + 160011501.

It is an arithmetic number, because the mean of its divisors is an integer number (160011501).

Almost surely, 2^320023001 is an apocalyptic number.

It is an amenable number.

320023001 is a deficient number, since it is larger than the sum of its proper divisors (1).

320023001 is an equidigital number, since it uses as much as digits as its factorization.

320023001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 320023001 is about 17889.1867059405. The cubic root of 320023001 is about 684.0067662600.

Adding to 320023001 its reverse (100320023), we get a palindrome (420343024).

The spelling of 320023001 in words is "three hundred twenty million, twenty-three thousand, one".