243750243 has 16 divisors (see below), whose sum is σ = 354969216. Its totient is φ = 147551040.

The previous prime is 243750229. The next prime is 243750257. The reversal of 243750243 is 342057342.

It is an interprime number because it is at equal distance from previous prime (243750229) and next prime (243750257).

It is not a de Polignac number, because 243750243 - 2⁹ = 243749731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243750243.

It is not an unprimeable number, because it can be changed into a prime (243750203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26980 + ... + 34862.

It is an arithmetic number, because the mean of its divisors is an integer number (22185576).

Almost surely, 2^243750243 is an apocalyptic number.

243750243 is a deficient number, since it is larger than the sum of its proper divisors (111218973).

243750243 is a wasteful number, since it uses less digits than its factorization.

243750243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8834.

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 243750243 is about 15612.5027782223. The cubic root of 243750243 is about 624.6666963121. Note that the first 4 decimals are identical.

The spelling of 243750243 in words is "two hundred forty-three million, seven hundred fifty thousand, two hundred forty-three".