820347323 has 4 divisors (see below), whose sum is σ = 821922408. Its totient is φ = 818772240.

The previous prime is 820347289. The next prime is 820347347. The reversal of 820347323 is 323743028.

820347323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 820347323 - 2⁸ = 820347067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 820347323.

It is not an unprimeable number, because it can be changed into a prime (820341323) 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, 786761 + ... + 787802.

It is an arithmetic number, because the mean of its divisors is an integer number (205480602).

Almost surely, 2^820347323 is an apocalyptic number.

820347323 is a deficient number, since it is larger than the sum of its proper divisors (1575085).

820347323 is a wasteful number, since it uses less digits than its factorization.

820347323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575084.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 820347323 is about 28641.7060071498. The cubic root of 820347323 is about 936.1222944373.

The spelling of 820347323 in words is "eight hundred twenty million, three hundred forty-seven thousand, three hundred twenty-three".