243320125 has 8 divisors (see below), whose sum is σ = 303663672. Its totient is φ = 194656000.

The previous prime is 243320113. The next prime is 243320131. The reversal of 243320125 is 521023342.

It can be written as a sum of positive squares in 4 ways, for example, as 68525284 + 174794841 = 8278^2 + 13221^2 .

It is not a de Polignac number, because 243320125 - 2¹¹ = 243318077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243320096 and 243320105.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 973156 + ... + 973405.

It is an arithmetic number, because the mean of its divisors is an integer number (37957959).

Almost surely, 2^243320125 is an apocalyptic number.

243320125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243320125 is a deficient number, since it is larger than the sum of its proper divisors (60343547).

243320125 is an equidigital number, since it uses as much as digits as its factorization.

243320125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946576 (or 1946566 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 243320125 is about 15598.7219027714. The cubic root of 243320125 is about 624.2990541738.

Adding to 243320125 its reverse (521023342), we get a palindrome (764343467).

The spelling of 243320125 in words is "two hundred forty-three million, three hundred twenty thousand, one hundred twenty-five".