320410385 has 4 divisors (see below), whose sum is σ = 384492468. Its totient is φ = 256328304.

The previous prime is 320410313. The next prime is 320410403. The reversal of 320410385 is 583014023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132802576 + 187607809 = 11524^2 + 13697^2 .

It is a cyclic number.

It is not a de Polignac number, because 320410385 - 2¹⁰ = 320409361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32041034 + ... + 32041043.

It is an arithmetic number, because the mean of its divisors is an integer number (96123117).

Almost surely, 2^320410385 is an apocalyptic number.

It is an amenable number.

320410385 is a deficient number, since it is larger than the sum of its proper divisors (64082083).

320410385 is an equidigital number, since it uses as much as digits as its factorization.

320410385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64082082.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 320410385 is about 17900.0107541867. The cubic root of 320410385 is about 684.2826489648.

The spelling of 320410385 in words is "three hundred twenty million, four hundred ten thousand, three hundred eighty-five".