243213533246312 has 8 divisors (see below), whose sum is σ = 456025374836850. Its totient is φ = 121606766623152.

The previous prime is 243213533246303. The next prime is 243213533246357. The reversal of 243213533246312 is 213642335312342.

It can be written as a sum of positive squares in only one way, i.e., 239621545521796 + 3591987724516 = 15479714^2 + 1895254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15200845827887 + ... + 15200845827902.

Almost surely, 2^{243213533246312} is an apocalyptic number.

It is an amenable number.

243213533246312 is a deficient number, since it is larger than the sum of its proper divisors (212811841590538).

243213533246312 is a wasteful number, since it uses less digits than its factorization.

243213533246312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30401691655795 (or 30401691655791 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 44.

Adding to 243213533246312 its reverse (213642335312342), we get a palindrome (456855868558654).

The spelling of 243213533246312 in words is "two hundred forty-three trillion, two hundred thirteen billion, five hundred thirty-three million, two hundred forty-six thousand, three hundred twelve".