243130311244 has 18 divisors (see below), whose sum is σ = 440655626684. Its totient is φ = 117373252080.

The previous prime is 243130311223. The next prime is 243130311253. The reversal of 243130311244 is 442113031342.

It is a happy number.

It is a super-2 number, since 2×243130311244² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 36133722 + ... + 36140449.

Almost surely, 2^243130311244 is an apocalyptic number.

It is an amenable number.

243130311244 is a deficient number, since it is larger than the sum of its proper divisors (197525315440).

243130311244 is a wasteful number, since it uses less digits than its factorization.

243130311244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72274233 (or 72274202 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 243130311244 its reverse (442113031342), we get a palindrome (685243342586).

The spelling of 243130311244 in words is "two hundred forty-three billion, one hundred thirty million, three hundred eleven thousand, two hundred forty-four".