243431335020 has 48 divisors (see below), whose sum is σ = 683030799360. Its totient is φ = 64779493056.

The previous prime is 243431335019. The next prime is 243431335067. The reversal of 243431335020 is 20533134342.

243431335020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 4206322 + ... + 4263801.

It is an arithmetic number, because the mean of its divisors is an integer number (14229808320).

Almost surely, 2^243431335020 is an apocalyptic number.

243431335020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243431335020 is an abundant number, since it is smaller than the sum of its proper divisors (439599464340).

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

243431335020 is a wasteful number, since it uses less digits than its factorization.

243431335020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8470614 (or 8470612 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 243431335020 its reverse (20533134342), we get a palindrome (263964469362).

The spelling of 243431335020 in words is "two hundred forty-three billion, four hundred thirty-one million, three hundred thirty-five thousand, twenty".