243134313543 has 12 divisors (see below), whose sum is σ = 383120736648. Its totient is φ = 147354129360.

The previous prime is 243134313533. The next prime is 243134313577. The reversal of 243134313543 is 345313431342.

243134313543 is a `hidden beast` number, since 24 + 31 + 34 + 31 + 3 + 543 = 666.

It is not a de Polignac number, because 243134313543 - 2¹⁷ = 243134182471 is a prime.

It is a super-2 number, since 2×243134313543² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243134313498 and 243134313507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243134313533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1227950980 + ... + 1227951177.

It is an arithmetic number, because the mean of its divisors is an integer number (31926728054).

Almost surely, 2^243134313543 is an apocalyptic number.

243134313543 is a deficient number, since it is larger than the sum of its proper divisors (139986423105).

243134313543 is a wasteful number, since it uses less digits than its factorization.

243134313543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455902174 (or 2455902171 counting only the distinct ones).

The product of its digits is 155520, while the sum is 36.

Adding to 243134313543 its reverse (345313431342), we get a palindrome (588447744885).

The spelling of 243134313543 in words is "two hundred forty-three billion, one hundred thirty-four million, three hundred thirteen thousand, five hundred forty-three".