243326087 has 2 divisors, whose sum is σ = 243326088. Its totient is φ = 243326086.

The previous prime is 243326063. The next prime is 243326123. The reversal of 243326087 is 780623342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243326087 is a prime.

It is a super-2 number, since 2×243326087² = 118415169229463138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243326687) 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, 121663043 + 121663044.

It is an arithmetic number, because the mean of its divisors is an integer number (121663044).

Almost surely, 2^243326087 is an apocalyptic number.

243326087 is a deficient number, since it is larger than the sum of its proper divisors (1).

243326087 is an equidigital number, since it uses as much as digits as its factorization.

243326087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 243326087 is about 15598.9130070015. The cubic root of 243326087 is about 624.3041531363.

The spelling of 243326087 in words is "two hundred forty-three million, three hundred twenty-six thousand, eighty-seven".