321316853 has 8 divisors (see below), whose sum is σ = 377491296. Its totient is φ = 269636400.

The previous prime is 321316799. The next prime is 321316859. The reversal of 321316853 is 358613123.

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

It is not a de Polignac number, because 321316853 - 2¹⁶ = 321251317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321316859) 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, 1123343 + ... + 1123628.

It is an arithmetic number, because the mean of its divisors is an integer number (47186412).

Almost surely, 2^321316853 is an apocalyptic number.

It is an amenable number.

321316853 is a deficient number, since it is larger than the sum of its proper divisors (56174443).

321316853 is a wasteful number, since it uses less digits than its factorization.

321316853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246995.

The product of its digits is 12960, while the sum is 32.

The square root of 321316853 is about 17925.3131911272. The cubic root of 321316853 is about 684.9273391591.

Adding to 321316853 its reverse (358613123), we get a palindrome (679929976).

The spelling of 321316853 in words is "three hundred twenty-one million, three hundred sixteen thousand, eight hundred fifty-three".