243243015203 has 8 divisors (see below), whose sum is σ = 257591993472. Its totient is φ = 228898544256.

The previous prime is 243243015199. The next prime is 243243015269. The reversal of 243243015203 is 302510342342.

It is a happy number.

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 243243015203 - 2² = 243243015199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243243015703) 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, 1015400 + ... + 1231877.

It is an arithmetic number, because the mean of its divisors is an integer number (32198999184).

Almost surely, 2^243243015203 is an apocalyptic number.

243243015203 is a deficient number, since it is larger than the sum of its proper divisors (14348978269).

243243015203 is a wasteful number, since it uses less digits than its factorization.

243243015203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253661.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 243243015203 its reverse (302510342342), we get a palindrome (545753357545).

The spelling of 243243015203 in words is "two hundred forty-three billion, two hundred forty-three million, fifteen thousand, two hundred three".