320157443 has 2 divisors, whose sum is σ = 320157444. Its totient is φ = 320157442.

The previous prime is 320157377. The next prime is 320157451. The reversal of 320157443 is 344751023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320157443 - 2²⁴ = 303380227 is a prime.

It is not a weakly prime, because it can be changed into another prime (320156443) 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, 160078721 + 160078722.

It is an arithmetic number, because the mean of its divisors is an integer number (160078722).

Almost surely, 2^320157443 is an apocalyptic number.

320157443 is a deficient number, since it is larger than the sum of its proper divisors (1).

320157443 is an equidigital number, since it uses as much as digits as its factorization.

320157443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 320157443 is about 17892.9439444715. The cubic root of 320157443 is about 684.1025368380.

The spelling of 320157443 in words is "three hundred twenty million, one hundred fifty-seven thousand, four hundred forty-three".