243161343 has 6 divisors (see below), whose sum is σ = 351233064. Its totient is φ = 162107556.

The previous prime is 243161333. The next prime is 243161351. The reversal of 243161343 is 343161342.

243161343 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 613 + 43 = 666.

It is not a de Polignac number, because 243161343 - 2²⁵ = 209606911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243161323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13508955 + ... + 13508972.

It is an arithmetic number, because the mean of its divisors is an integer number (58538844).

Almost surely, 2^243161343 is an apocalyptic number.

243161343 is a deficient number, since it is larger than the sum of its proper divisors (108071721).

243161343 is a wasteful number, since it uses less digits than its factorization.

243161343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27017933 (or 27017930 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 243161343 is about 15593.6314885276. The cubic root of 243161343 is about 624.1632262221.

Subtracting 243161343 from its reverse (343161342), we obtain a palindrome (99999999).

The spelling of 243161343 in words is "two hundred forty-three million, one hundred sixty-one thousand, three hundred forty-three".