243003134440 has 32 divisors (see below), whose sum is σ = 596462240160. Its totient is φ = 88364776000.

The previous prime is 243003134359. The next prime is 243003134503. The reversal of 243003134440 is 44431300342.

It is a super-2 number, since 2×243003134440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243003134399 and 243003134408.

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 in 7 ways as a sum of consecutive naturals, for example, 276139486 + ... + 276140365.

It is an arithmetic number, because the mean of its divisors is an integer number (18639445005).

Almost surely, 2^243003134440 is an apocalyptic number.

243003134440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243003134440 is an abundant number, since it is smaller than the sum of its proper divisors (353459105720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243003134440 is a wasteful number, since it uses less digits than its factorization.

243003134440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552279873 (or 552279869 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 243003134440 its reverse (44431300342), we get a palindrome (287434434782).

The spelling of 243003134440 in words is "two hundred forty-three billion, three million, one hundred thirty-four thousand, four hundred forty".