243320231425 has 6 divisors (see below), whose sum is σ = 301717086998. Its totient is φ = 194656185120.

The previous prime is 243320231377. The next prime is 243320231459. The reversal of 243320231425 is 524132023342.

It can be written as a sum of positive squares in 3 ways, for example, as 61598772481 + 181721458944 = 248191^2 + 426288^2 .

It is not a de Polignac number, because 243320231425 - 2⁹ = 243320230913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4866404604 + ... + 4866404653.

Almost surely, 2^243320231425 is an apocalyptic number.

243320231425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243320231425 is a deficient number, since it is larger than the sum of its proper divisors (58396855573).

243320231425 is an equidigital number, since it uses as much as digits as its factorization.

243320231425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732809267 (or 9732809262 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 243320231425 its reverse (524132023342), we get a palindrome (767452254767).

The spelling of 243320231425 in words is "two hundred forty-three billion, three hundred twenty million, two hundred thirty-one thousand, four hundred twenty-five".