243132221003 has 4 divisors (see below), whose sum is σ = 277865395440. Its totient is φ = 208399046568.

The previous prime is 243132220993. The next prime is 243132221027. The reversal of 243132221003 is 300122231342.

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 243132221003 - 2¹⁴ = 243132204619 is a prime.

It is a super-2 number, since 2×243132221003² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243132221003.

It is not an unprimeable number, because it can be changed into a prime (243132221203) 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, 17366587208 + ... + 17366587221.

It is an arithmetic number, because the mean of its divisors is an integer number (69466348860).

Almost surely, 2^243132221003 is an apocalyptic number.

243132221003 is a deficient number, since it is larger than the sum of its proper divisors (34733174437).

243132221003 is an equidigital number, since it uses as much as digits as its factorization.

243132221003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34733174436.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 243132221003 its reverse (300122231342), we get a palindrome (543254452345).

The spelling of 243132221003 in words is "two hundred forty-three billion, one hundred thirty-two million, two hundred twenty-one thousand, three".