243243532135 has 16 divisors (see below), whose sum is σ = 320613903360. Its totient is φ = 176337643680.

The previous prime is 243243532121. The next prime is 243243532141. The reversal of 243243532135 is 531235342342.

It is not a de Polignac number, because 243243532135 - 2²³ = 243235143527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243243532094 and 243243532103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55659951 + ... + 55664320.

It is an arithmetic number, because the mean of its divisors is an integer number (20038368960).

Almost surely, 2^243243532135 is an apocalyptic number.

243243532135 is a deficient number, since it is larger than the sum of its proper divisors (77370371225).

243243532135 is a wasteful number, since it uses less digits than its factorization.

243243532135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111324318.

The product of its digits is 259200, while the sum is 37.

Adding to 243243532135 its reverse (531235342342), we get a palindrome (774478874477).

The spelling of 243243532135 in words is "two hundred forty-three billion, two hundred forty-three million, five hundred thirty-two thousand, one hundred thirty-five".