12531043235344 has 10 divisors (see below), whose sum is σ = 24278896268510. Its totient is φ = 6265521617664.

The previous prime is 12531043235317. The next prime is 12531043235353. The reversal of 12531043235344 is 44353234013521.

It can be written as a sum of positive squares in only one way, i.e., 11496575235600 + 1034467999744 = 3390660^2 + 1017088^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12531043235297 and 12531043235306.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391595101089 + ... + 391595101120.

It is an arithmetic number, because the mean of its divisors is an integer number (2427889626851).

Almost surely, 2^{12531043235344} is an apocalyptic number.

It is an amenable number.

12531043235344 is a deficient number, since it is larger than the sum of its proper divisors (11747853033166).

12531043235344 is an equidigital number, since it uses as much as digits as its factorization.

12531043235344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783190202217 (or 783190202211 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 12531043235344 its reverse (44353234013521), we get a palindrome (56884277248865).

The spelling of 12531043235344 in words is "twelve trillion, five hundred thirty-one billion, forty-three million, two hundred thirty-five thousand, three hundred forty-four".