243123340332 has 12 divisors (see below), whose sum is σ = 567287794136. Its totient is φ = 81041113440.

The previous prime is 243123340331. The next prime is 243123340373. The reversal of 243123340332 is 233043321342.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×243123340332² (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 243123340332.

It is not an unprimeable number, because it can be changed into a prime (243123340331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10130139169 + ... + 10130139192.

Almost surely, 2^243123340332 is an apocalyptic number.

It is an amenable number.

243123340332 is an abundant number, since it is smaller than the sum of its proper divisors (324164453804).

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

243123340332 is a wasteful number, since it uses less digits than its factorization.

243123340332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20260278368 (or 20260278366 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 30.

Adding to 243123340332 its reverse (233043321342), we get a palindrome (476166661674).

The spelling of 243123340332 in words is "two hundred forty-three billion, one hundred twenty-three million, three hundred forty thousand, three hundred thirty-two".