243713927 has 2 divisors, whose sum is σ = 243713928. Its totient is φ = 243713926.

The previous prime is 243713839. The next prime is 243713929. The reversal of 243713927 is 729317342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243713927 - 2¹⁴ = 243697543 is a prime.

It is a super-2 number, since 2×243713927² = 118792956427522658, which contains 22 as substring.

Together with 243713929, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243713929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121856963 + 121856964.

It is an arithmetic number, because the mean of its divisors is an integer number (121856964).

Almost surely, 2^243713927 is an apocalyptic number.

243713927 is a deficient number, since it is larger than the sum of its proper divisors (1).

243713927 is an equidigital number, since it uses as much as digits as its factorization.

243713927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 243713927 is about 15611.3396926721. The cubic root of 243713927 is about 624.6356720388.

The spelling of 243713927 in words is "two hundred forty-three million, seven hundred thirteen thousand, nine hundred twenty-seven".