243155230212 has 48 divisors (see below), whose sum is σ = 602953327872. Its totient is φ = 76002485760.

The previous prime is 243155230181. The next prime is 243155230267. The reversal of 243155230212 is 212032551342.

It is a self number, because there is not a number n which added to its sum of digits gives 243155230212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2143863 + ... + 2254430.

It is an arithmetic number, because the mean of its divisors is an integer number (12561527664).

Almost surely, 2^243155230212 is an apocalyptic number.

It is an amenable number.

243155230212 is an abundant number, since it is smaller than the sum of its proper divisors (359798097660).

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

243155230212 is a wasteful number, since it uses less digits than its factorization.

243155230212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398588 (or 4398586 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 243155230212 its reverse (212032551342), we get a palindrome (455187781554).

The spelling of 243155230212 in words is "two hundred forty-three billion, one hundred fifty-five million, two hundred thirty thousand, two hundred twelve".