243213604 has 48 divisors (see below), whose sum is σ = 467006400. Its totient is φ = 110388096.

The previous prime is 243213601. The next prime is 243213637. The reversal of 243213604 is 406312342.

It is not an unprimeable number, because it can be changed into a prime (243213601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358914 + ... + 359590.

It is an arithmetic number, because the mean of its divisors is an integer number (9729300).

Almost surely, 2^243213604 is an apocalyptic number.

It is an amenable number.

243213604 is a deficient number, since it is larger than the sum of its proper divisors (223792796).

243213604 is a wasteful number, since it uses less digits than its factorization.

243213604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 243213604 is about 15595.3071146419. The cubic root of 243213604 is about 624.2079387263.

Adding to 243213604 its reverse (406312342), we get a palindrome (649525946).

The spelling of 243213604 in words is "two hundred forty-three million, two hundred thirteen thousand, six hundred four".