243203711828 has 24 divisors (see below), whose sum is σ = 530626281024. Its totient is φ = 94754692800.

The previous prime is 243203711827. The next prime is 243203711831. The reversal of 243203711828 is 828117302342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243203711827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394810913 + ... + 394811528.

It is an arithmetic number, because the mean of its divisors is an integer number (22109428376).

Almost surely, 2^243203711828 is an apocalyptic number.

243203711828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

243203711828 is an abundant number, since it is smaller than the sum of its proper divisors (287422569196).

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

243203711828 is a wasteful number, since it uses less digits than its factorization.

243203711828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789622463 (or 789622461 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 243203711828 in words is "two hundred forty-three billion, two hundred three million, seven hundred eleven thousand, eight hundred twenty-eight".