243423021303 has 48 divisors (see below), whose sum is σ = 443297836800. Its totient is φ = 125032659840.

The previous prime is 243423021299. The next prime is 243423021307. The reversal of 243423021303 is 303120324342.

243423021303 is a `hidden beast` number, since 2 + 4 + 342 + 302 + 13 + 0 + 3 = 666.

243423021303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243423021299) and next prime (243423021307).

It is not a de Polignac number, because 243423021303 - 2² = 243423021299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243423021307) 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 47 ways as a sum of consecutive naturals, for example, 1911693 + ... + 2035046.

It is an arithmetic number, because the mean of its divisors is an integer number (9235371600).

Almost surely, 2^243423021303 is an apocalyptic number.

243423021303 is a deficient number, since it is larger than the sum of its proper divisors (199874815497).

243423021303 is a wasteful number, since it uses less digits than its factorization.

243423021303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946852 (or 3946849 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 243423021303 its reverse (303120324342), we get a palindrome (546543345645).

The spelling of 243423021303 in words is "two hundred forty-three billion, four hundred twenty-three million, twenty-one thousand, three hundred three".