321642230 has 32 divisors (see below), whose sum is σ = 712563264. Its totient is φ = 101794176.

The previous prime is 321642229. The next prime is 321642257. The reversal of 321642230 is 32246123.

It is a junction number, because it is equal to n+sod(n) for n = 321642196 and 321642205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175817 + ... + 177636.

It is an arithmetic number, because the mean of its divisors is an integer number (22267602).

Almost surely, 2^321642230 is an apocalyptic number.

321642230 is an abundant number, since it is smaller than the sum of its proper divisors (390921034).

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

321642230 is a wasteful number, since it uses less digits than its factorization.

321642230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353480.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 321642230 is about 17934.3868030106. The cubic root of 321642230 is about 685.1584551825.

Adding to 321642230 its reverse (32246123), we get a palindrome (353888353).

The spelling of 321642230 in words is "three hundred twenty-one million, six hundred forty-two thousand, two hundred thirty".