243130241140 has 12 divisors (see below), whose sum is σ = 510573506436. Its totient is φ = 97252096448.

The previous prime is 243130241059. The next prime is 243130241143. The reversal of 243130241140 is 41142031342.

It can be written as a sum of positive squares in 2 ways, for example, as 91432454884 + 151697786256 = 302378^2 + 389484^2 .

It is a super-2 number, since 2×243130241140² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243130241143) 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, 6078256009 + ... + 6078256048.

It is an arithmetic number, because the mean of its divisors is an integer number (42547792203).

Almost surely, 2^243130241140 is an apocalyptic number.

243130241140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243130241140 is an abundant number, since it is smaller than the sum of its proper divisors (267443265296).

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

243130241140 is a wasteful number, since it uses less digits than its factorization.

243130241140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156512066 (or 12156512064 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 243130241140 its reverse (41142031342), we get a palindrome (284272272482).

The spelling of 243130241140 in words is "two hundred forty-three billion, one hundred thirty million, two hundred forty-one thousand, one hundred forty".