243312320003 has 2 divisors, whose sum is σ = 243312320004. Its totient is φ = 243312320002.

The previous prime is 243312319997. The next prime is 243312320057. The reversal of 243312320003 is 300023213342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243312320003 - 2²² = 243308125699 is a prime.

It is not a weakly prime, because it can be changed into another prime (243312320063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121656160001 + 121656160002.

It is an arithmetic number, because the mean of its divisors is an integer number (121656160002).

Almost surely, 2^243312320003 is an apocalyptic number.

243312320003 is a deficient number, since it is larger than the sum of its proper divisors (1).

243312320003 is an equidigital number, since it uses as much as digits as its factorization.

243312320003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 243312320003 its reverse (300023213342), we get a palindrome (543335533345).

The spelling of 243312320003 in words is "two hundred forty-three billion, three hundred twelve million, three hundred twenty thousand, three".