243213436 has 6 divisors (see below), whose sum is σ = 425623520. Its totient is φ = 121606716.

The previous prime is 243213409. The next prime is 243213457. The reversal of 243213436 is 634312342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30401676 + ... + 30401683.

Almost surely, 2^243213436 is an apocalyptic number.

It is an amenable number.

243213436 is a deficient number, since it is larger than the sum of its proper divisors (182410084).

243213436 is a wasteful number, since it uses less digits than its factorization.

243213436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60803363 (or 60803361 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

The square root of 243213436 is about 15595.3017284053. The cubic root of 243213436 is about 624.2077950022.

Adding to 243213436 its reverse (634312342), we get a palindrome (877525778).

The spelling of 243213436 in words is "two hundred forty-three million, two hundred thirteen thousand, four hundred thirty-six".