243431300000000 has 324 divisors, whose sum is σ = 694161207089280. Its totient is φ = 83461920000000.

The previous prime is 243431299999939. The next prime is 243431300000017. The reversal of 243431300000000 is 3134342.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 699826121 + ... + 700173879.

Almost surely, 2^{243431300000000} is an apocalyptic number.

243431300000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243431300000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347080603544640).

243431300000000 is an abundant number, since it is smaller than the sum of its proper divisors (450729907089280).

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

243431300000000 is an frugal number, since it uses more digits than its factorization.

243431300000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347822 (or 347773 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 243431300000000 its reverse (3134342), we get a palindrome (243431303134342).

The spelling of 243431300000000 in words is "two hundred forty-three trillion, four hundred thirty-one billion, three hundred million", and thus it is an aban number.