243440032340 has 12 divisors (see below), whose sum is σ = 511224067956. Its totient is φ = 97376012928.

The previous prime is 243440032331. The next prime is 243440032369. The reversal of 243440032340 is 43230044342.

It can be written as a sum of positive squares in 2 ways, for example, as 169018009924 + 74422022416 = 411118^2 + 272804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6086000789 + ... + 6086000828.

It is an arithmetic number, because the mean of its divisors is an integer number (42602005663).

Almost surely, 2^243440032340 is an apocalyptic number.

243440032340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243440032340 is an abundant number, since it is smaller than the sum of its proper divisors (267784035616).

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

243440032340 is a wasteful number, since it uses less digits than its factorization.

243440032340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12172001626 (or 12172001624 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 243440032340 its reverse (43230044342), we get a palindrome (286670076682).

The spelling of 243440032340 in words is "two hundred forty-three billion, four hundred forty million, thirty-two thousand, three hundred forty".