320787223 has 4 divisors (see below), whose sum is σ = 325575160. Its totient is φ = 315999288.

The previous prime is 320787221. The next prime is 320787251. The reversal of 320787223 is 322787023.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 320787223 - 2¹ = 320787221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320787221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2393868 + ... + 2394001.

It is an arithmetic number, because the mean of its divisors is an integer number (81393790).

Almost surely, 2^320787223 is an apocalyptic number.

320787223 is a deficient number, since it is larger than the sum of its proper divisors (4787937).

320787223 is an equidigital number, since it uses as much as digits as its factorization.

320787223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4787936.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 320787223 is about 17910.5338558068. The cubic root of 320787223 is about 684.5508078540.

The spelling of 320787223 in words is "three hundred twenty million, seven hundred eighty-seven thousand, two hundred twenty-three".