243441100247 has 2 divisors, whose sum is σ = 243441100248. Its totient is φ = 243441100246.

The previous prime is 243441100207. The next prime is 243441100277. The reversal of 243441100247 is 742001144342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243441100247 - 2⁸ = 243441099991 is a prime.

It is a super-2 number, since 2×243441100247² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243441100207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121720550123 + 121720550124.

It is an arithmetic number, because the mean of its divisors is an integer number (121720550124).

Almost surely, 2^243441100247 is an apocalyptic number.

243441100247 is a deficient number, since it is larger than the sum of its proper divisors (1).

243441100247 is an equidigital number, since it uses as much as digits as its factorization.

243441100247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 32.

Adding to 243441100247 its reverse (742001144342), we get a palindrome (985442244589).

The spelling of 243441100247 in words is "two hundred forty-three billion, four hundred forty-one million, one hundred thousand, two hundred forty-seven".