243001212 has 12 divisors (see below), whose sum is σ = 567002856. Its totient is φ = 81000400.

The previous prime is 243001211. The next prime is 243001223. The reversal of 243001212 is 212100342.

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

It is a junction number, because it is equal to n+sod(n) for n = 243001191 and 243001200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243001211) 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, 10125039 + ... + 10125062.

It is an arithmetic number, because the mean of its divisors is an integer number (47250238).

Almost surely, 2^243001212 is an apocalyptic number.

It is an amenable number.

243001212 is an abundant number, since it is smaller than the sum of its proper divisors (324001644).

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

243001212 is a wasteful number, since it uses less digits than its factorization.

243001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20250108 (or 20250106 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 243001212 is about 15588.4961429895. The cubic root of 243001212 is about 624.0261843878.

Adding to 243001212 its reverse (212100342), we get a palindrome (455101554).

The spelling of 243001212 in words is "two hundred forty-three million, one thousand, two hundred twelve".