243131144012428 has 48 divisors (see below), whose sum is σ = 496993354147584. Its totient is φ = 101924407166400.

The previous prime is 243131144012389. The next prime is 243131144012443. The reversal of 243131144012428 is 824210441131342.

It is a super-2 number, since 2×243131144012428² (a number of 30 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 517673850 + ... + 518143297.

It is an arithmetic number, because the mean of its divisors is an integer number (10354028211408).

Almost surely, 2^{243131144012428} is an apocalyptic number.

243131144012428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

243131144012428 is an abundant number, since it is smaller than the sum of its proper divisors (253862210135156).

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

243131144012428 is a wasteful number, since it uses less digits than its factorization.

243131144012428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035817342 (or 1035817340 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 243131144012428 in words is "two hundred forty-three trillion, one hundred thirty-one billion, one hundred forty-four million, twelve thousand, four hundred twenty-eight".