243343643 has 8 divisors (see below), whose sum is σ = 246714336. Its totient is φ = 239992000.

The previous prime is 243343619. The next prime is 243343649. The reversal of 243343643 is 346343342.

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

It is a cyclic number.

It is not a de Polignac number, because 243343643 - 2²⁴ = 226566427 is a prime.

It is a super-2 number, since 2×243343643² = 118432257177022898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243343649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21983 + ... + 31143.

It is an arithmetic number, because the mean of its divisors is an integer number (30839292).

Almost surely, 2^243343643 is an apocalyptic number.

243343643 is a deficient number, since it is larger than the sum of its proper divisors (3370693).

243343643 is a wasteful number, since it uses less digits than its factorization.

243343643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9525.

The product of its digits is 62208, while the sum is 32.

The square root of 243343643 is about 15599.4757283698. The cubic root of 243343643 is about 624.3191673096.

Adding to 243343643 its reverse (346343342), we get a palindrome (589686985).

The spelling of 243343643 in words is "two hundred forty-three million, three hundred forty-three thousand, six hundred forty-three".