243402203243 has 4 divisors (see below), whose sum is σ = 243492121800. Its totient is φ = 243312284688.

The previous prime is 243402203183. The next prime is 243402203249. The reversal of 243402203243 is 342302204342.

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 243402203243 - 2²⁴ = 243385426027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243402203249) 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, 44955218 + ... + 44960631.

It is an arithmetic number, because the mean of its divisors is an integer number (60873030450).

Almost surely, 2^243402203243 is an apocalyptic number.

243402203243 is a deficient number, since it is larger than the sum of its proper divisors (89918557).

243402203243 is an equidigital number, since it uses as much as digits as its factorization.

243402203243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89918556.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 243402203243 its reverse (342302204342), we get a palindrome (585704407585).

The spelling of 243402203243 in words is "two hundred forty-three billion, four hundred two million, two hundred three thousand, two hundred forty-three".