243927923 has 2 divisors, whose sum is σ = 243927924. Its totient is φ = 243927922.

The previous prime is 243927919. The next prime is 243927989. The reversal of 243927923 is 329729342.

243927923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243927923 - 2² = 243927919 is a prime.

It is not a weakly prime, because it can be changed into another prime (243927023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121963961 + 121963962.

It is an arithmetic number, because the mean of its divisors is an integer number (121963962).

Almost surely, 2^243927923 is an apocalyptic number.

243927923 is a deficient number, since it is larger than the sum of its proper divisors (1).

243927923 is an equidigital number, since it uses as much as digits as its factorization.

243927923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 41.

The square root of 243927923 is about 15618.1920528594. The cubic root of 243927923 is about 624.8184415569.

The spelling of 243927923 in words is "two hundred forty-three million, nine hundred twenty-seven thousand, nine hundred twenty-three".