320305077 has 8 divisors (see below), whose sum is σ = 474526080. Its totient is φ = 213536700.

The previous prime is 320305043. The next prime is 320305081. The reversal of 320305077 is 770503023.

It is not a de Polignac number, because 320305077 - 2⁷ = 320304949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 11863151 = 320305077 / (3 + 2 + 0 + 3 + 0 + 5 + 0 + 7 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 320305077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320305577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5931549 + ... + 5931602.

It is an arithmetic number, because the mean of its divisors is an integer number (59315760).

Almost surely, 2^320305077 is an apocalyptic number.

It is an amenable number.

320305077 is a deficient number, since it is larger than the sum of its proper divisors (154221003).

320305077 is a wasteful number, since it uses less digits than its factorization.

320305077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11863160 (or 11863154 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 320305077 is about 17897.0689499706. The cubic root of 320305077 is about 684.2076739363.

The spelling of 320305077 in words is "three hundred twenty million, three hundred five thousand, seventy-seven".