243007 has 4 divisors (see below), whose sum is σ = 248976. Its totient is φ = 237040.

The previous prime is 242999. The next prime is 243011. The reversal of 243007 is 700342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243007 - 2³ = 242999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243077) 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 in 3 ways as a sum of consecutive naturals, for example, 2923 + ... + 3004.

It is an arithmetic number, because the mean of its divisors is an integer number (62244).

2²⁴³⁰⁰⁷ is an apocalyptic number.

243007 is a deficient number, since it is larger than the sum of its proper divisors (5969).

243007 is an equidigital number, since it uses as much as digits as its factorization.

243007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 243007 is about 492.9574018107. The cubic root of 243007 is about 62.4031138869.

Adding to 243007 its reverse (700342), we get a palindrome (943349).

The spelling of 243007 in words is "two hundred forty-three thousand, seven", and thus it is an iban number.