243203232043 has 4 divisors (see below), whose sum is σ = 243205183368. Its totient is φ = 243201280720.

The previous prime is 243203232037. The next prime is 243203232073. The reversal of 243203232043 is 340232302342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340232302342 = 2 ⋅170116151171.

It is a cyclic number.

It is not a de Polignac number, because 243203232043 - 2⁵ = 243203232011 is a prime.

It is a super-3 number, since 3×243203232043³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243203232073) 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, 774946 + ... + 1042567.

It is an arithmetic number, because the mean of its divisors is an integer number (60801295842).

Almost surely, 2^243203232043 is an apocalyptic number.

243203232043 is a deficient number, since it is larger than the sum of its proper divisors (1951325).

243203232043 is a wasteful number, since it uses less digits than its factorization.

243203232043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951324.

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 243203232043 its reverse (340232302342), we get a palindrome (583435534385).

The spelling of 243203232043 in words is "two hundred forty-three billion, two hundred three million, two hundred thirty-two thousand, forty-three".