234415309 has 2 divisors, whose sum is σ = 234415310. Its totient is φ = 234415308.

The previous prime is 234415301. The next prime is 234415339. The reversal of 234415309 is 903514432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231709284 + 2706025 = 15222^2 + 1645^2 .

It is a cyclic number.

It is not a de Polignac number, because 234415309 - 2³ = 234415301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234415301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117207654 + 117207655.

It is an arithmetic number, because the mean of its divisors is an integer number (117207655).

Almost surely, 2^234415309 is an apocalyptic number.

It is an amenable number.

234415309 is a deficient number, since it is larger than the sum of its proper divisors (1).

234415309 is an equidigital number, since it uses as much as digits as its factorization.

234415309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 234415309 is about 15310.6273222230. The cubic root of 234415309 is about 616.5883625272.

The spelling of 234415309 in words is "two hundred thirty-four million, four hundred fifteen thousand, three hundred nine".