320144501 has 2 divisors, whose sum is σ = 320144502. Its totient is φ = 320144500.

The previous prime is 320144483. The next prime is 320144549. The reversal of 320144501 is 105441023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190412401 + 129732100 = 13799^2 + 11390^2 .

It is an emirp because it is prime and its reverse (105441023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320144501 - 2¹⁰ = 320143477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320144101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160072250 + 160072251.

It is an arithmetic number, because the mean of its divisors is an integer number (160072251).

Almost surely, 2^320144501 is an apocalyptic number.

It is an amenable number.

320144501 is a deficient number, since it is larger than the sum of its proper divisors (1).

320144501 is an equidigital number, since it uses as much as digits as its factorization.

320144501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 320144501 is about 17892.5822898764. The cubic root of 320144501 is about 684.0933186918.

Adding to 320144501 its reverse (105441023), we get a palindrome (425585524).

The spelling of 320144501 in words is "three hundred twenty million, one hundred forty-four thousand, five hundred one".