243241019 has 8 divisors (see below), whose sum is σ = 278181600. Its totient is φ = 208348416.

The previous prime is 243241003. The next prime is 243241051. The reversal of 243241019 is 910142342.

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 243241019 - 2⁴ = 243241003 is a prime.

It is a super-2 number, since 2×243241019² = 118332386648316722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243241619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374 + ... + 22059.

It is an arithmetic number, because the mean of its divisors is an integer number (34772700).

Almost surely, 2^243241019 is an apocalyptic number.

243241019 is a deficient number, since it is larger than the sum of its proper divisors (34940581).

243241019 is a wasteful number, since it uses less digits than its factorization.

243241019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23989.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 243241019 is about 15596.1860401830. The cubic root of 243241019 is about 624.2313913861.

The spelling of 243241019 in words is "two hundred forty-three million, two hundred forty-one thousand, nineteen".