243441100013 has 2 divisors, whose sum is σ = 243441100014. Its totient is φ = 243441100012.

The previous prime is 243441099991. The next prime is 243441100027. The reversal of 243441100013 is 310001144342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229099121449 + 14341978564 = 478643^2 + 119758^2 .

It is a cyclic number.

It is not a de Polignac number, because 243441100013 - 2³⁶ = 174721623277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243441100073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121720550006 + 121720550007.

It is an arithmetic number, because the mean of its divisors is an integer number (121720550007).

Almost surely, 2^243441100013 is an apocalyptic number.

It is an amenable number.

243441100013 is a deficient number, since it is larger than the sum of its proper divisors (1).

243441100013 is an equidigital number, since it uses as much as digits as its factorization.

243441100013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 243441100013 its reverse (310001144342), we get a palindrome (553442244355).

The spelling of 243441100013 in words is "two hundred forty-three billion, four hundred forty-one million, one hundred thousand, thirteen".