243001540231212 has 24 divisors (see below), whose sum is σ = 648004107283456. Its totient is φ = 69429011494608.

The previous prime is 243001540231201. The next prime is 243001540231231. The reversal of 243001540231212 is 212132045100342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243001540231212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446437739388 + ... + 1446437739555.

Almost surely, 2^{243001540231212} is an apocalyptic number.

It is an amenable number.

243001540231212 is an abundant number, since it is smaller than the sum of its proper divisors (405002567052244).

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

243001540231212 is a wasteful number, since it uses less digits than its factorization.

243001540231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892875478957 (or 2892875478955 counting only the distinct ones).

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

Adding to 243001540231212 its reverse (212132045100342), we get a palindrome (455133585331554).

The spelling of 243001540231212 in words is "two hundred forty-three trillion, one billion, five hundred forty million, two hundred thirty-one thousand, two hundred twelve".