243748871 has 8 divisors (see below), whose sum is σ = 256179840. Its totient is φ = 231470712.

The previous prime is 243748849. The next prime is 243748903. The reversal of 243748871 is 178847342.

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

It is not a de Polignac number, because 243748871 - 2⁶ = 243748807 is a prime.

It is a super-2 number, since 2×243748871² = 118827024227549282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243748831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34925 + ... + 41318.

It is an arithmetic number, because the mean of its divisors is an integer number (32022480).

Almost surely, 2^243748871 is an apocalyptic number.

243748871 is a deficient number, since it is larger than the sum of its proper divisors (12430969).

243748871 is a wasteful number, since it uses less digits than its factorization.

243748871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76405.

The product of its digits is 301056, while the sum is 44.

The square root of 243748871 is about 15612.4588390170. The cubic root of 243748871 is about 624.6655242869.

The spelling of 243748871 in words is "two hundred forty-three million, seven hundred forty-eight thousand, eight hundred seventy-one".