320143459 has 2 divisors, whose sum is σ = 320143460. Its totient is φ = 320143458.

The previous prime is 320143429. The next prime is 320143477. The reversal of 320143459 is 954341023.

It is a strong prime.

It is an emirp because it is prime and its reverse (954341023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320143459 - 2⁵ = 320143427 is a prime.

It is equal to p_17282551 and since 320143459 and 17282551 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320143459.

It is not a weakly prime, because it can be changed into another prime (320143429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160071729 + 160071730.

It is an arithmetic number, because the mean of its divisors is an integer number (160071730).

Almost surely, 2^320143459 is an apocalyptic number.

320143459 is a deficient number, since it is larger than the sum of its proper divisors (1).

320143459 is an equidigital number, since it uses as much as digits as its factorization.

320143459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 320143459 is about 17892.5531716410. The cubic root of 320143459 is about 684.0925764998.

The spelling of 320143459 in words is "three hundred twenty million, one hundred forty-three thousand, four hundred fifty-nine".