243212636 has 12 divisors (see below), whose sum is σ = 426608112. Its totient is φ = 121324608.

The previous prime is 243212611. The next prime is 243212653. The reversal of 243212636 is 636212342.

It is a junction number, because it is equal to n+sod(n) for n = 243212599 and 243212608.

It is a congruent number.

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, 68480 + ... + 71943.

It is an arithmetic number, because the mean of its divisors is an integer number (35550676).

Almost surely, 2^243212636 is an apocalyptic number.

It is an amenable number.

243212636 is a deficient number, since it is larger than the sum of its proper divisors (183395476).

243212636 is a wasteful number, since it uses less digits than its factorization.

243212636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140860 (or 140858 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

The square root of 243212636 is about 15595.2760796339. The cubic root of 243212636 is about 624.2071106009.

Adding to 243212636 its reverse (636212342), we get a palindrome (879424978).

The spelling of 243212636 in words is "two hundred forty-three million, two hundred twelve thousand, six hundred thirty-six".