243340627 has 2 divisors, whose sum is σ = 243340628. Its totient is φ = 243340626.

The previous prime is 243340597. The next prime is 243340631. The reversal of 243340627 is 726043342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243340627 - 2¹⁹ = 242816339 is a prime.

It is not a weakly prime, because it can be changed into another prime (243340637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121670313 + 121670314.

It is an arithmetic number, because the mean of its divisors is an integer number (121670314).

Almost surely, 2^243340627 is an apocalyptic number.

243340627 is a deficient number, since it is larger than the sum of its proper divisors (1).

243340627 is an equidigital number, since it uses as much as digits as its factorization.

243340627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 243340627 is about 15599.3790581548. The cubic root of 243340627 is about 624.3165880293.

Adding to 243340627 its reverse (726043342), we get a palindrome (969383969).

The spelling of 243340627 in words is "two hundred forty-three million, three hundred forty thousand, six hundred twenty-seven".