323220545 has 8 divisors (see below), whose sum is σ = 388338624. Its totient is φ = 258260464.

The previous prime is 323220523. The next prime is 323220563. The reversal of 323220545 is 545022323.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323220545 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34949 + ... + 43218.

It is an arithmetic number, because the mean of its divisors is an integer number (48542328).

Almost surely, 2^323220545 is an apocalyptic number.

It is an amenable number.

323220545 is a deficient number, since it is larger than the sum of its proper divisors (65118079).

323220545 is an equidigital number, since it uses as much as digits as its factorization.

323220545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78999.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 323220545 is about 17978.3354346280. The cubic root of 323220545 is about 686.2773296659.

Adding to 323220545 its reverse (545022323), we get a palindrome (868242868).

The spelling of 323220545 in words is "three hundred twenty-three million, two hundred twenty thousand, five hundred forty-five".