243443052403 has 2 divisors, whose sum is σ = 243443052404. Its totient is φ = 243443052402.

The previous prime is 243443052373. The next prime is 243443052439. The reversal of 243443052403 is 304250344342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243443052403 is a prime.

It is not a weakly prime, because it can be changed into another prime (243443052103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121721526201 + 121721526202.

It is an arithmetic number, because the mean of its divisors is an integer number (121721526202).

Almost surely, 2^243443052403 is an apocalyptic number.

243443052403 is a deficient number, since it is larger than the sum of its proper divisors (1).

243443052403 is an equidigital number, since it uses as much as digits as its factorization.

243443052403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 34.

Adding to 243443052403 its reverse (304250344342), we get a palindrome (547693396745).

The spelling of 243443052403 in words is "two hundred forty-three billion, four hundred forty-three million, fifty-two thousand, four hundred three".