243155135 has 8 divisors (see below), whose sum is σ = 293916816. Its totient is φ = 193103680.

The previous prime is 243155117. The next prime is 243155161. The reversal of 243155135 is 531551342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243155135 - 2⁶ = 243155071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243155098 and 243155107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176801 + ... + 178170.

It is an arithmetic number, because the mean of its divisors is an integer number (36739602).

Almost surely, 2^243155135 is an apocalyptic number.

243155135 is a deficient number, since it is larger than the sum of its proper divisors (50761681).

243155135 is a wasteful number, since it uses less digits than its factorization.

243155135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355113.

The product of its digits is 9000, while the sum is 29.

The square root of 243155135 is about 15593.4324316361. The cubic root of 243155135 is about 624.1579144700.

The spelling of 243155135 in words is "two hundred forty-three million, one hundred fifty-five thousand, one hundred thirty-five".