243243230231 has 4 divisors (see below), whose sum is σ = 243245605464. Its totient is φ = 243240855000.

The previous prime is 243243230213. The next prime is 243243230239. The reversal of 243243230231 is 132032342342.

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 243243230231 - 2³⁴ = 226063361047 is a prime.

It is a super-2 number, since 2×243243230231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243243230194 and 243243230203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243243230239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026740 + ... + 1241241.

It is an arithmetic number, because the mean of its divisors is an integer number (60811401366).

Almost surely, 2^243243230231 is an apocalyptic number.

243243230231 is a deficient number, since it is larger than the sum of its proper divisors (2375233).

243243230231 is a wasteful number, since it uses less digits than its factorization.

243243230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375232.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 243243230231 its reverse (132032342342), we get a palindrome (375275572573).

The spelling of 243243230231 in words is "two hundred forty-three billion, two hundred forty-three million, two hundred thirty thousand, two hundred thirty-one".