243324431243 has 8 divisors (see below), whose sum is σ = 248758748112. Its totient is φ = 237943132416.

The previous prime is 243324431221. The next prime is 243324431261. The reversal of 243324431243 is 342134423342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243324431243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243324431843) 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, 13245230 + ... + 13263587.

It is an arithmetic number, because the mean of its divisors is an integer number (31094843514).

Almost surely, 2^243324431243 is an apocalyptic number.

243324431243 is a deficient number, since it is larger than the sum of its proper divisors (5434316869).

243324431243 is a wasteful number, since it uses less digits than its factorization.

243324431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26509021.

The product of its digits is 165888, while the sum is 35.

Adding to 243324431243 its reverse (342134423342), we get a palindrome (585458854585).

The spelling of 243324431243 in words is "two hundred forty-three billion, three hundred twenty-four million, four hundred thirty-one thousand, two hundred forty-three".