243234423545 has 8 divisors (see below), whose sum is σ = 291898677696. Its totient is φ = 194575959216.

The previous prime is 243234423541. The next prime is 243234423559. The reversal of 243234423545 is 545324432342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243234423545 - 2² = 243234423541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243234423541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1354487 + ... + 1523516.

It is an arithmetic number, because the mean of its divisors is an integer number (36487334712).

Almost surely, 2^243234423545 is an apocalyptic number.

It is an amenable number.

243234423545 is a deficient number, since it is larger than the sum of its proper divisors (48664254151).

243234423545 is a wasteful number, since it uses less digits than its factorization.

243234423545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894911.

The product of its digits is 1382400, while the sum is 41.

Adding to 243234423545 its reverse (545324432342), we get a palindrome (788558855887).

The spelling of 243234423545 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred twenty-three thousand, five hundred forty-five".