243379543 has 16 divisors (see below), whose sum is σ = 278737920. Its totient is φ = 210470400.

The previous prime is 243379523. The next prime is 243379547. The reversal of 243379543 is 345973342.

It is a cyclic number.

It is not a de Polignac number, because 243379543 - 2⁵ = 243379511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243379496 and 243379505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243379547) 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, 14071 + ... + 26167.

It is an arithmetic number, because the mean of its divisors is an integer number (17421120).

Almost surely, 2^243379543 is an apocalyptic number.

243379543 is a deficient number, since it is larger than the sum of its proper divisors (35358377).

243379543 is a wasteful number, since it uses less digits than its factorization.

243379543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12198.

The product of its digits is 272160, while the sum is 40.

The square root of 243379543 is about 15600.6263656303. The cubic root of 243379543 is about 624.3498673185.

The spelling of 243379543 in words is "two hundred forty-three million, three hundred seventy-nine thousand, five hundred forty-three".