243115355 has 16 divisors (see below), whose sum is σ = 350964480. Its totient is φ = 157933152.

The previous prime is 243115321. The next prime is 243115373. The reversal of 243115355 is 553511342.

It is a cyclic number.

It is not a de Polignac number, because 243115355 - 2⁸ = 243115099 is a prime.

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, 182129 + ... + 183458.

It is an arithmetic number, because the mean of its divisors is an integer number (21935280).

Almost surely, 2^243115355 is an apocalyptic number.

243115355 is a deficient number, since it is larger than the sum of its proper divisors (107849125).

243115355 is a wasteful number, since it uses less digits than its factorization.

243115355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365618.

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

The square root of 243115355 is about 15592.1568424641. The cubic root of 243115355 is about 624.1238753562.

Adding to 243115355 its reverse (553511342), we get a palindrome (796626697).

The spelling of 243115355 in words is "two hundred forty-three million, one hundred fifteen thousand, three hundred fifty-five".