234043309 has 2 divisors, whose sum is σ = 234043310. Its totient is φ = 234043308.

The previous prime is 234043279. The next prime is 234043333. The reversal of 234043309 is 903340432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232410025 + 1633284 = 15245^2 + 1278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234043309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234044309) by changing a digit.

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 as a sum of consecutive naturals, namely, 117021654 + 117021655.

It is an arithmetic number, because the mean of its divisors is an integer number (117021655).

Almost surely, 2^234043309 is an apocalyptic number.

It is an amenable number.

234043309 is a deficient number, since it is larger than the sum of its proper divisors (1).

234043309 is an equidigital number, since it uses as much as digits as its factorization.

234043309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 234043309 is about 15298.4740742337. The cubic root of 234043309 is about 616.2620295891.

The spelling of 234043309 in words is "two hundred thirty-four million, forty-three thousand, three hundred nine".