320403379 has 2 divisors, whose sum is σ = 320403380. Its totient is φ = 320403378.

The previous prime is 320403367. The next prime is 320403401. The reversal of 320403379 is 973304023.

It is a weak prime.

It is an emirp because it is prime and its reverse (973304023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320403379 - 2²³ = 312014771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320403379.

It is not a weakly prime, because it can be changed into another prime (320403359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160201689 + 160201690.

It is an arithmetic number, because the mean of its divisors is an integer number (160201690).

Almost surely, 2^320403379 is an apocalyptic number.

320403379 is a deficient number, since it is larger than the sum of its proper divisors (1).

320403379 is an equidigital number, since it uses as much as digits as its factorization.

320403379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 320403379 is about 17899.8150549105. The cubic root of 320403379 is about 684.2776614869.

The spelling of 320403379 in words is "three hundred twenty million, four hundred three thousand, three hundred seventy-nine".