243031132340 has 12 divisors (see below), whose sum is σ = 510365377956. Its totient is φ = 97212452928.

The previous prime is 243031132321. The next prime is 243031132349. The reversal of 243031132340 is 43231130342.

It can be written as a sum of positive squares in 2 ways, for example, as 129572641444 + 113458490896 = 359962^2 + 336836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243031132349) 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 3 ways as a sum of consecutive naturals, for example, 6075778289 + ... + 6075778328.

It is an arithmetic number, because the mean of its divisors is an integer number (42530448163).

Almost surely, 2^243031132340 is an apocalyptic number.

243031132340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243031132340 is an abundant number, since it is smaller than the sum of its proper divisors (267334245616).

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

243031132340 is a wasteful number, since it uses less digits than its factorization.

243031132340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12151556626 (or 12151556624 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 243031132340 its reverse (43231130342), we get a palindrome (286262262682).

The spelling of 243031132340 in words is "two hundred forty-three billion, thirty-one million, one hundred thirty-two thousand, three hundred forty".