243613043 has 4 divisors (see below), whose sum is σ = 257943240. Its totient is φ = 229282848.

The previous prime is 243612997. The next prime is 243613049. The reversal of 243613043 is 340316342.

It is a happy number.

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 243613043 - 2⁶ = 243612979 is a prime.

It is a super-3 number, since 3×243613043³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243613049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7165073 + ... + 7165106.

It is an arithmetic number, because the mean of its divisors is an integer number (64485810).

Almost surely, 2^243613043 is an apocalyptic number.

243613043 is a deficient number, since it is larger than the sum of its proper divisors (14330197).

243613043 is a wasteful number, since it uses less digits than its factorization.

243613043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14330196.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 243613043 is about 15608.1082453960. The cubic root of 243613043 is about 624.5494720106.

Adding to 243613043 its reverse (340316342), we get a palindrome (583929385).

The spelling of 243613043 in words is "two hundred forty-three million, six hundred thirteen thousand, forty-three".