243134212512 has 24 divisors (see below), whose sum is σ = 638227308096. Its totient is φ = 81044737472.

The previous prime is 243134212501. The next prime is 243134212603. The reversal of 243134212512 is 215212431342.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×243134212512² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243134212512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1266323928 + ... + 1266324119.

It is an arithmetic number, because the mean of its divisors is an integer number (26592804504).

Almost surely, 2^243134212512 is an apocalyptic number.

It is an amenable number.

243134212512 is an abundant number, since it is smaller than the sum of its proper divisors (395093095584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243134212512 is a wasteful number, since it uses less digits than its factorization.

243134212512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532648060 (or 2532648052 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

Adding to 243134212512 its reverse (215212431342), we get a palindrome (458346643854).

The spelling of 243134212512 in words is "two hundred forty-three billion, one hundred thirty-four million, two hundred twelve thousand, five hundred twelve".