220304323 has 2 divisors, whose sum is σ = 220304324. Its totient is φ = 220304322.

The previous prime is 220304311. The next prime is 220304339. The reversal of 220304323 is 323403022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220304323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220304323.

It is not a weakly prime, because it can be changed into another prime (220304393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110152161 + 110152162.

It is an arithmetic number, because the mean of its divisors is an integer number (110152162).

Almost surely, 2^220304323 is an apocalyptic number.

220304323 is a deficient number, since it is larger than the sum of its proper divisors (1).

220304323 is an equidigital number, since it uses as much as digits as its factorization.

220304323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 220304323 is about 14842.6521551911. The cubic root of 220304323 is about 603.9593000293.

Adding to 220304323 its reverse (323403022), we get a palindrome (543707345).

The spelling of 220304323 in words is "two hundred twenty million, three hundred four thousand, three hundred twenty-three".