321313284 has 24 divisors (see below), whose sum is σ = 833034720. Its totient is φ = 107104392.

The previous prime is 321313283. The next prime is 321313297. The reversal of 321313284 is 482313123.

321313284 is a `hidden beast` number, since 321 + 313 + 28 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (321313283) 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, 1487454 + ... + 1487669.

It is an arithmetic number, because the mean of its divisors is an integer number (34709780).

Almost surely, 2^321313284 is an apocalyptic number.

It is an amenable number.

321313284 is an abundant number, since it is smaller than the sum of its proper divisors (511721436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321313284 is a wasteful number, since it uses less digits than its factorization.

321313284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975136 (or 2975128 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 321313284 is about 17925.2136388942. The cubic root of 321313284 is about 684.9248032254.

It can be divided in two parts, 32 and 1313284, that added together give a square (1313316 = 1146²).

The spelling of 321313284 in words is "three hundred twenty-one million, three hundred thirteen thousand, two hundred eighty-four".