234840321 has 6 divisors (see below), whose sum is σ = 339213810. Its totient is φ = 156560208.

The previous prime is 234840317. The next prime is 234840367. The reversal of 234840321 is 123048432.

234840321 is a `hidden beast` number, since 234 + 8 + 403 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 186732225 + 48108096 = 13665^2 + 6936^2 .

It is not a de Polignac number, because 234840321 - 2² = 234840317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (234840121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13046676 + ... + 13046693.

It is an arithmetic number, because the mean of its divisors is an integer number (56535635).

Almost surely, 2^234840321 is an apocalyptic number.

It is an amenable number.

234840321 is a deficient number, since it is larger than the sum of its proper divisors (104373489).

234840321 is a wasteful number, since it uses less digits than its factorization.

234840321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26093375 (or 26093372 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 234840321 is about 15324.5006770204. The cubic root of 234840321 is about 616.9607773909.

Adding to 234840321 its reverse (123048432), we get a palindrome (357888753).

The spelling of 234840321 in words is "two hundred thirty-four million, eight hundred forty thousand, three hundred twenty-one".