243043107 has 24 divisors (see below), whose sum is σ = 334215168. Its totient is φ = 157092000.

The previous prime is 243043091. The next prime is 243043109. The reversal of 243043107 is 701340342.

It is not a de Polignac number, because 243043107 - 2⁴ = 243043091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243043109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1272382 + ... + 1272572.

It is an arithmetic number, because the mean of its divisors is an integer number (13925632).

Almost surely, 2^243043107 is an apocalyptic number.

243043107 is a deficient number, since it is larger than the sum of its proper divisors (91172061).

243043107 is a wasteful number, since it uses less digits than its factorization.

243043107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 243043107 is about 15589.8398644758. The cubic root of 243043107 is about 624.0620443937.

Adding to 243043107 its reverse (701340342), we get a palindrome (944383449).

The spelling of 243043107 in words is "two hundred forty-three million, forty-three thousand, one hundred seven".