243120354101 has 2 divisors, whose sum is σ = 243120354102. Its totient is φ = 243120354100.

The previous prime is 243120354079. The next prime is 243120354137. The reversal of 243120354101 is 101453021342.

It is a happy number.

243120354101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231375430225 + 11744923876 = 481015^2 + 108374^2 .

It is a cyclic number.

It is not a de Polignac number, because 243120354101 - 2¹⁸ = 243120091957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243120353101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121560177050 + 121560177051.

It is an arithmetic number, because the mean of its divisors is an integer number (121560177051).

Almost surely, 2^243120354101 is an apocalyptic number.

It is an amenable number.

243120354101 is a deficient number, since it is larger than the sum of its proper divisors (1).

243120354101 is an equidigital number, since it uses as much as digits as its factorization.

243120354101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 243120354101 its reverse (101453021342), we get a palindrome (344573375443).

The spelling of 243120354101 in words is "two hundred forty-three billion, one hundred twenty million, three hundred fifty-four thousand, one hundred one".