321045613 has 8 divisors (see below), whose sum is σ = 367018880. Its totient is φ = 275099760.

The previous prime is 321045607. The next prime is 321045649. The reversal of 321045613 is 316540123.

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-321045613 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 (321045913) 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 in 7 ways as a sum of consecutive naturals, for example, 36808 + ... + 44686.

It is an arithmetic number, because the mean of its divisors is an integer number (45877360).

Almost surely, 2^321045613 is an apocalyptic number.

It is an amenable number.

321045613 is a deficient number, since it is larger than the sum of its proper divisors (45973267).

321045613 is an equidigital number, since it uses as much as digits as its factorization.

321045613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13707.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 321045613 is about 17917.7457566514. The cubic root of 321045613 is about 684.7345574966.

Adding to 321045613 its reverse (316540123), we get a palindrome (637585736).

The spelling of 321045613 in words is "three hundred twenty-one million, forty-five thousand, six hundred thirteen".