243105252135 has 16 divisors (see below), whose sum is σ = 389006208096. Its totient is φ = 129643532928.

The previous prime is 243105252127. The next prime is 243105252139. The reversal of 243105252135 is 531252501342.

243105252135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243105252135 - 2³ = 243105252127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243105252096 and 243105252105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243105252139) 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 in 15 ways as a sum of consecutive naturals, for example, 627064 + ... + 937773.

It is an arithmetic number, because the mean of its divisors is an integer number (24312888006).

Almost surely, 2^243105252135 is an apocalyptic number.

243105252135 is a deficient number, since it is larger than the sum of its proper divisors (145900955961).

243105252135 is a wasteful number, since it uses less digits than its factorization.

243105252135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575202.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 243105252135 its reverse (531252501342), we get a palindrome (774357753477).

The spelling of 243105252135 in words is "two hundred forty-three billion, one hundred five million, two hundred fifty-two thousand, one hundred thirty-five".