243431472140 has 24 divisors (see below), whose sum is σ = 512679322512. Its totient is φ = 97091973440.

The previous prime is 243431472101. The next prime is 243431472157. The reversal of 243431472140 is 41274134342.

243431472140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 243431472140.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17531351 + ... + 17545230.

It is an arithmetic number, because the mean of its divisors is an integer number (21361638438).

Almost surely, 2^243431472140 is an apocalyptic number.

243431472140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243431472140 is an abundant number, since it is smaller than the sum of its proper divisors (269247850372).

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

243431472140 is a wasteful number, since it uses less digits than its factorization.

243431472140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35076937 (or 35076935 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 35.

The spelling of 243431472140 in words is "two hundred forty-three billion, four hundred thirty-one million, four hundred seventy-two thousand, one hundred forty".