234040321 has 2 divisors, whose sum is σ = 234040322. Its totient is φ = 234040320.

The previous prime is 234040291. The next prime is 234040337. The reversal of 234040321 is 123040432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232989696 + 1050625 = 15264^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 234040321 - 2⁹ = 234039809 is a prime.

It is equal to p_12852100 and since 234040321 and 12852100 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (234040361) 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 as a sum of consecutive naturals, namely, 117020160 + 117020161.

It is an arithmetic number, because the mean of its divisors is an integer number (117020161).

Almost surely, 2^234040321 is an apocalyptic number.

It is an amenable number.

234040321 is a deficient number, since it is larger than the sum of its proper divisors (1).

234040321 is an equidigital number, since it uses as much as digits as its factorization.

234040321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 234040321 is about 15298.3764171235. The cubic root of 234040321 is about 616.2594069993.

Adding to 234040321 its reverse (123040432), we get a palindrome (357080753).

The spelling of 234040321 in words is "two hundred thirty-four million, forty thousand, three hundred twenty-one".