243320231424 has 40 divisors (see below), whose sum is σ = 648220308120. Its totient is φ = 81106743296.

The previous prime is 243320231377. The next prime is 243320231459. The reversal of 243320231424 is 424132023342.

It is a junction number, because it is equal to n+sod(n) for n = 243320231391 and 243320231400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79204269 + ... + 79207340.

It is an arithmetic number, because the mean of its divisors is an integer number (16205507703).

Almost surely, 2^243320231424 is an apocalyptic number.

243320231424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243320231424 is an abundant number, since it is smaller than the sum of its proper divisors (404900076696).

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

243320231424 is an equidigital number, since it uses as much as digits as its factorization.

243320231424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158411630 (or 158411614 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 243320231424 its reverse (424132023342), we get a palindrome (667452254766).

The spelling of 243320231424 in words is "two hundred forty-three billion, three hundred twenty million, two hundred thirty-one thousand, four hundred twenty-four".