12531312453131 has 4 divisors (see below), whose sum is σ = 12535202960064. Its totient is φ = 12527421946200.

The previous prime is 12531312453097. The next prime is 12531312453133. The reversal of 12531312453131 is 13135421313521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12531312453131 - 2³⁴ = 12514132583947 is a prime.

It is a super-2 number, since 2×12531312453131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12531312453091 and 12531312453100.

It is not an unprimeable number, because it can be changed into a prime (12531312453133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945248635 + ... + 1945255076.

It is an arithmetic number, because the mean of its divisors is an integer number (3133800740016).

Almost surely, 2^{12531312453131} is an apocalyptic number.

12531312453131 is a deficient number, since it is larger than the sum of its proper divisors (3890506933).

12531312453131 is an equidigital number, since it uses as much as digits as its factorization.

12531312453131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890506932.

The product of its digits is 32400, while the sum is 35.

Adding to 12531312453131 its reverse (13135421313521), we get a palindrome (25666733766652).

The spelling of 12531312453131 in words is "twelve trillion, five hundred thirty-one billion, three hundred twelve million, four hundred fifty-three thousand, one hundred thirty-one".