243103143 has 8 divisors (see below), whose sum is σ = 335314800. Its totient is φ = 156480128.

The previous prime is 243103139. The next prime is 243103177. The reversal of 243103143 is 341301342.

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

It is a cyclic number.

It is not a de Polignac number, because 243103143 - 2² = 243103139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243103183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397058 + ... + 1397231.

It is an arithmetic number, because the mean of its divisors is an integer number (41914350).

Almost surely, 2^243103143 is an apocalyptic number.

243103143 is a deficient number, since it is larger than the sum of its proper divisors (92211657).

243103143 is a wasteful number, since it uses less digits than its factorization.

243103143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794321.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 243103143 is about 15591.7652304029. The cubic root of 243103143 is about 624.1134249969.

Adding to 243103143 its reverse (341301342), we get a palindrome (584404485).

The spelling of 243103143 in words is "two hundred forty-three million, one hundred three thousand, one hundred forty-three".