243423667 has 2 divisors, whose sum is σ = 243423668. Its totient is φ = 243423666.

The previous prime is 243423637. The next prime is 243423671. The reversal of 243423667 is 766324342.

243423667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243423667 - 2¹⁹ = 242899379 is a prime.

It is not a weakly prime, because it can be changed into another prime (243423637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121711833 + 121711834.

It is an arithmetic number, because the mean of its divisors is an integer number (121711834).

Almost surely, 2^243423667 is an apocalyptic number.

243423667 is a deficient number, since it is larger than the sum of its proper divisors (1).

243423667 is an equidigital number, since it uses as much as digits as its factorization.

243423667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 37.

The square root of 243423667 is about 15602.0404755276. The cubic root of 243423667 is about 624.3875959741.

The spelling of 243423667 in words is "two hundred forty-three million, four hundred twenty-three thousand, six hundred sixty-seven".