321320334 has 16 divisors (see below), whose sum is σ = 650776320. Its totient is φ = 105750840.

The previous prime is 321320317. The next prime is 321320347. The reversal of 321320334 is 433023123.

It is a super-3 number, since 3×321320334³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321320334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338472 + ... + 339419.

It is an arithmetic number, because the mean of its divisors is an integer number (40673520).

Almost surely, 2^321320334 is an apocalyptic number.

321320334 is an abundant number, since it is smaller than the sum of its proper divisors (329455986).

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

321320334 is a wasteful number, since it uses less digits than its factorization.

321320334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677975.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 321320334 is about 17925.4102881915. The cubic root of 321320334 is about 684.9298125468.

Adding to 321320334 its reverse (433023123), we get a palindrome (754343457).

The spelling of 321320334 in words is "three hundred twenty-one million, three hundred twenty thousand, three hundred thirty-four".