243132322140 has 48 divisors (see below), whose sum is σ = 756411670560. Its totient is φ = 64835285760.

The previous prime is 243132322129. The next prime is 243132322141. The reversal of 243132322140 is 41223231342.

243132322140 is a `hidden beast` number, since 2 + 431 + 3 + 2 + 3 + 221 + 4 + 0 = 666.

243132322140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243132322140² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243132322141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225121981 + ... + 225123060.

It is an arithmetic number, because the mean of its divisors is an integer number (15758576470).

Almost surely, 2^243132322140 is an apocalyptic number.

243132322140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243132322140 is an abundant number, since it is smaller than the sum of its proper divisors (513279348420).

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

243132322140 is a wasteful number, since it uses less digits than its factorization.

243132322140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450245059 (or 450245051 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 243132322140 its reverse (41223231342), we get a palindrome (284355553482).

The spelling of 243132322140 in words is "two hundred forty-three billion, one hundred thirty-two million, three hundred twenty-two thousand, one hundred forty".