320000143 has 2 divisors, whose sum is σ = 320000144. Its totient is φ = 320000142.

The previous prime is 320000137. The next prime is 320000171. The reversal of 320000143 is 341000023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320000143 - 2¹⁷ = 319869071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320000113) 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 as a sum of consecutive naturals, namely, 160000071 + 160000072.

It is an arithmetic number, because the mean of its divisors is an integer number (160000072).

Almost surely, 2^320000143 is an apocalyptic number.

320000143 is a deficient number, since it is larger than the sum of its proper divisors (1).

320000143 is an equidigital number, since it uses as much as digits as its factorization.

320000143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320000143 is about 17888.5478169694. The cubic root of 320000143 is about 683.9904805567.

Adding to 320000143 its reverse (341000023), we get a palindrome (661000166).

The spelling of 320000143 in words is "three hundred twenty million, one hundred forty-three", and thus it is an aban number.