243403143 has 8 divisors (see below), whose sum is σ = 330038400. Its totient is φ = 159518328.

The previous prime is 243403141. The next prime is 243403151. The reversal of 243403143 is 341304342.

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

It is not a de Polignac number, because 243403143 - 2¹ = 243403141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243403141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687403 + ... + 687756.

It is an arithmetic number, because the mean of its divisors is an integer number (41254800).

Almost surely, 2^243403143 is an apocalyptic number.

243403143 is a deficient number, since it is larger than the sum of its proper divisors (86635257).

243403143 is a wasteful number, since it uses less digits than its factorization.

243403143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375221.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 243403143 is about 15601.3827271816. The cubic root of 243403143 is about 624.3700472953.

Adding to 243403143 its reverse (341304342), we get a palindrome (584707485).

The spelling of 243403143 in words is "two hundred forty-three million, four hundred three thousand, one hundred forty-three".