243225303 has 4 divisors (see below), whose sum is σ = 324300408. Its totient is φ = 162150200.

The previous prime is 243225263. The next prime is 243225337. The reversal of 243225303 is 303522342.

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 243225303 - 2¹⁶ = 243159767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243215303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40537548 + ... + 40537553.

It is an arithmetic number, because the mean of its divisors is an integer number (81075102).

Almost surely, 2^243225303 is an apocalyptic number.

243225303 is a deficient number, since it is larger than the sum of its proper divisors (81075105).

243225303 is an equidigital number, since it uses as much as digits as its factorization.

243225303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81075104.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 243225303 is about 15595.6821909143. The cubic root of 243225303 is about 624.2179470640.

Adding to 243225303 its reverse (303522342), we get a palindrome (546747645).

The spelling of 243225303 in words is "two hundred forty-three million, two hundred twenty-five thousand, three hundred three".