321318979 has 8 divisors (see below), whose sum is σ = 325578960. Its totient is φ = 317068416.

The previous prime is 321318973. The next prime is 321318997. The reversal of 321318979 is 979813123.

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

It is a cyclic number.

It is not a de Polignac number, because 321318979 - 2³ = 321318971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321318971) 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, 89287 + ... + 92815.

It is an arithmetic number, because the mean of its divisors is an integer number (40697370).

Almost surely, 2^321318979 is an apocalyptic number.

321318979 is a deficient number, since it is larger than the sum of its proper divisors (4259981).

321318979 is a wasteful number, since it uses less digits than its factorization.

321318979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709.

The product of its digits is 81648, while the sum is 43.

The square root of 321318979 is about 17925.3724926429. The cubic root of 321318979 is about 684.9288497680.

The spelling of 321318979 in words is "three hundred twenty-one million, three hundred eighteen thousand, nine hundred seventy-nine".