243041403 has 8 divisors (see below), whose sum is σ = 353514816. Its totient is φ = 147297800.

The previous prime is 243041387. The next prime is 243041441. The reversal of 243041403 is 304140342.

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 243041403 - 2⁴ = 243041387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243041403.

It is not an unprimeable number, because it can be changed into a prime (243041003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3682413 + ... + 3682478.

It is an arithmetic number, because the mean of its divisors is an integer number (44189352).

Almost surely, 2^243041403 is an apocalyptic number.

243041403 is a deficient number, since it is larger than the sum of its proper divisors (110473413).

243041403 is a wasteful number, since it uses less digits than its factorization.

243041403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7364905.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243041403 is about 15589.7852134018. The cubic root of 243041403 is about 624.0605859361.

Adding to 243041403 its reverse (304140342), we get a palindrome (547181745).

The spelling of 243041403 in words is "two hundred forty-three million, forty-one thousand, four hundred three".