324681321 has 8 divisors (see below), whose sum is σ = 446873344. Its totient is φ = 209471760.

The previous prime is 324681299. The next prime is 324681323. The reversal of 324681321 is 123186423.

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

It is not a de Polignac number, because 324681321 - 2⁷ = 324681193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (324681323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1745506 + ... + 1745691.

It is an arithmetic number, because the mean of its divisors is an integer number (55859168).

Almost surely, 2^324681321 is an apocalyptic number.

324681321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

324681321 is a deficient number, since it is larger than the sum of its proper divisors (122192023).

324681321 is a wasteful number, since it uses less digits than its factorization.

324681321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491231.

The product of its digits is 6912, while the sum is 30.

The square root of 324681321 is about 18018.9156443999. The cubic root of 324681321 is about 687.3096392411.

The spelling of 324681321 in words is "three hundred twenty-four million, six hundred eighty-one thousand, three hundred twenty-one".