243120244369 has 2 divisors, whose sum is σ = 243120244370. Its totient is φ = 243120244368.

The previous prime is 243120244307. The next prime is 243120244373. The reversal of 243120244369 is 963442021342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133235950225 + 109884294144 = 365015^2 + 331488^2 .

It is a cyclic number.

It is not a de Polignac number, because 243120244369 - 2²³ = 243111855761 is a prime.

It is a super-2 number, since 2×243120244369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243120244769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121560122184 + 121560122185.

It is an arithmetic number, because the mean of its divisors is an integer number (121560122185).

Almost surely, 2^243120244369 is an apocalyptic number.

It is an amenable number.

243120244369 is a deficient number, since it is larger than the sum of its proper divisors (1).

243120244369 is an equidigital number, since it uses as much as digits as its factorization.

243120244369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 243120244369 in words is "two hundred forty-three billion, one hundred twenty million, two hundred forty-four thousand, three hundred sixty-nine".