243124031155 has 16 divisors (see below), whose sum is σ = 296936423424. Its totient is φ = 191049540480.

The previous prime is 243124031147. The next prime is 243124031221. The reversal of 243124031155 is 551130421342.

It is not a de Polignac number, because 243124031155 - 2³ = 243124031147 is a prime.

It is a Duffinian 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, 320179 + ... + 767308.

It is an arithmetic number, because the mean of its divisors is an integer number (18558526464).

Almost surely, 2^243124031155 is an apocalyptic number.

243124031155 is a deficient number, since it is larger than the sum of its proper divisors (53812392269).

243124031155 is a wasteful number, since it uses less digits than its factorization.

243124031155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088286.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 243124031155 its reverse (551130421342), we get a palindrome (794254452497).

The spelling of 243124031155 in words is "two hundred forty-three billion, one hundred twenty-four million, thirty-one thousand, one hundred fifty-five".