243121131125 has 16 divisors (see below), whose sum is σ = 303467186880. Its totient is φ = 194463562000.

The previous prime is 243121131101. The next prime is 243121131181. The reversal of 243121131125 is 521131121342.

243121131125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243121131125 - 2⁸ = 243121130869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243121131094 and 243121131103.

It is a congruent number.

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, 578630 + ... + 906120.

It is an arithmetic number, because the mean of its divisors is an integer number (18966699180).

Almost surely, 2^243121131125 is an apocalyptic number.

243121131125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243121131125 is a deficient number, since it is larger than the sum of its proper divisors (60346055755).

243121131125 is an equidigital number, since it uses as much as digits as its factorization.

243121131125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333445 (or 333435 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

Adding to 243121131125 its reverse (521131121342), we get a palindrome (764252252467).

The spelling of 243121131125 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred thirty-one thousand, one hundred twenty-five".