243430403144 has 8 divisors (see below), whose sum is σ = 456432005910. Its totient is φ = 121715201568.

The previous prime is 243430403081. The next prime is 243430403171. The reversal of 243430403144 is 441304034342.

It can be written as a sum of positive squares in only one way, i.e., 217027403044 + 26403000100 = 465862^2 + 162490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×243430403144² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243430403144.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15214400189 + ... + 15214400204.

Almost surely, 2^243430403144 is an apocalyptic number.

It is an amenable number.

243430403144 is a deficient number, since it is larger than the sum of its proper divisors (213001602766).

243430403144 is a wasteful number, since it uses less digits than its factorization.

243430403144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30428800399 (or 30428800395 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 243430403144 its reverse (441304034342), we get a palindrome (684734437486).

The spelling of 243430403144 in words is "two hundred forty-three billion, four hundred thirty million, four hundred three thousand, one hundred forty-four".