243630213 has 8 divisors (see below), whose sum is σ = 343948608. Its totient is φ = 152865984.

The previous prime is 243630203. The next prime is 243630223. The reversal of 243630213 is 312036342.

It is an interprime number because it is at equal distance from previous prime (243630203) and next prime (243630223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243630213 - 2¹⁰ = 243629189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243630203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2388481 + ... + 2388582.

It is an arithmetic number, because the mean of its divisors is an integer number (42993576).

Almost surely, 2^243630213 is an apocalyptic number.

It is an amenable number.

243630213 is a deficient number, since it is larger than the sum of its proper divisors (100318395).

243630213 is a wasteful number, since it uses less digits than its factorization.

243630213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777083.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 243630213 is about 15608.6582703319. The cubic root of 243630213 is about 624.5641445454.

Adding to 243630213 its reverse (312036342), we get a palindrome (555666555).

The spelling of 243630213 in words is "two hundred forty-three million, six hundred thirty thousand, two hundred thirteen".