243130311243 has 24 divisors (see below), whose sum is σ = 352839951360. Its totient is φ = 161325244080.

The previous prime is 243130311223. The next prime is 243130311253. The reversal of 243130311243 is 342113031342.

It is a happy number.

243130311243 is a `hidden beast` number, since 243 + 1 + 303 + 112 + 4 + 3 = 666.

It is not a de Polignac number, because 243130311243 - 2⁸ = 243130310987 is a prime.

It is a super-2 number, since 2×243130311243² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243130311223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4280238 + ... + 4336668.

It is an arithmetic number, because the mean of its divisors is an integer number (14701664640).

Almost surely, 2^243130311243 is an apocalyptic number.

243130311243 is a deficient number, since it is larger than the sum of its proper divisors (109709640117).

243130311243 is a wasteful number, since it uses less digits than its factorization.

243130311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58679 (or 58676 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 243130311243 its reverse (342113031342), we get a palindrome (585243342585).

The spelling of 243130311243 in words is "two hundred forty-three billion, one hundred thirty million, three hundred eleven thousand, two hundred forty-three".