243626343 has 4 divisors (see below), whose sum is σ = 324835128. Its totient is φ = 162417560.

The previous prime is 243626329. The next prime is 243626359. The reversal of 243626343 is 343626342.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243626343 - 2⁵ = 243626311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243626393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40604388 + ... + 40604393.

It is an arithmetic number, because the mean of its divisors is an integer number (81208782).

Almost surely, 2^243626343 is an apocalyptic number.

243626343 is a deficient number, since it is larger than the sum of its proper divisors (81208785).

243626343 is an equidigital number, since it uses as much as digits as its factorization.

243626343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81208784.

The product of its digits is 62208, while the sum is 33.

The square root of 243626343 is about 15608.5343001833. The cubic root of 243626343 is about 624.5608375170.

Subtracting 243626343 from its reverse (343626342), we obtain a palindrome (99999999).

The spelling of 243626343 in words is "two hundred forty-three million, six hundred twenty-six thousand, three hundred forty-three".