320826403 has 2 divisors, whose sum is σ = 320826404. Its totient is φ = 320826402.

The previous prime is 320826383. The next prime is 320826413. The reversal of 320826403 is 304628023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320826403 is a prime.

It is not a weakly prime, because it can be changed into another prime (320826413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160413201 + 160413202.

It is an arithmetic number, because the mean of its divisors is an integer number (160413202).

Almost surely, 2^320826403 is an apocalyptic number.

320826403 is a deficient number, since it is larger than the sum of its proper divisors (1).

320826403 is an equidigital number, since it uses as much as digits as its factorization.

320826403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 320826403 is about 17911.6275921537. The cubic root of 320826403 is about 684.5786763879.

The spelling of 320826403 in words is "three hundred twenty million, eight hundred twenty-six thousand, four hundred three".