243707 has 2 divisors, whose sum is σ = 243708. Its totient is φ = 243706.

The previous prime is 243703. The next prime is 243709. The reversal of 243707 is 707342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243707 - 2² = 243703 is a prime.

Together with 243709, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121853 + 121854.

It is an arithmetic number, because the mean of its divisors is an integer number (121854).

2²⁴³⁷⁰⁷ is an apocalyptic number.

243707 is a deficient number, since it is larger than the sum of its proper divisors (1).

243707 is an equidigital number, since it uses as much as digits as its factorization.

243707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 243707 is about 493.6668917398. Note that the first 3 decimals coincide. The cubic root of 243707 is about 62.4629754045.

The spelling of 243707 in words is "two hundred forty-three thousand, seven hundred seven", and thus it is an iban number.