321324231 has 4 divisors (see below), whose sum is σ = 428432312. Its totient is φ = 214216152.

The previous prime is 321324221. The next prime is 321324233. The reversal of 321324231 is 132423123.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 321324231 - 2¹⁸ = 321062087 is a prime.

It is a super-2 number, since 2×321324231² = 206498522855482722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321324198 and 321324207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321324233) 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 3 ways as a sum of consecutive naturals, for example, 53554036 + ... + 53554041.

It is an arithmetic number, because the mean of its divisors is an integer number (107108078).

Almost surely, 2^321324231 is an apocalyptic number.

321324231 is a deficient number, since it is larger than the sum of its proper divisors (107108081).

321324231 is a wasteful number, since it uses less digits than its factorization.

321324231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107108080.

The product of its digits is 864, while the sum is 21.

The square root of 321324231 is about 17925.5189883027. The cubic root of 321324231 is about 684.9325814977.

Adding to 321324231 its reverse (132423123), we get a palindrome (453747354).

It can be divided in two parts, 32132 and 4231, that added together give a palindrome (36363).

The spelling of 321324231 in words is "three hundred twenty-one million, three hundred twenty-four thousand, two hundred thirty-one".