13251531422131 has 4 divisors (see below), whose sum is σ = 13251578117472. Its totient is φ = 13251484726792.

The previous prime is 13251531422119. The next prime is 13251531422177. The reversal of 13251531422131 is 13122413515231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13251531422131 is a prime.

It is a super-2 number, since 2×13251531422131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13251531422191) 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, 22919371 + ... + 23490436.

It is an arithmetic number, because the mean of its divisors is an integer number (3312894529368).

Almost surely, 2^{13251531422131} is an apocalyptic number.

13251531422131 is a deficient number, since it is larger than the sum of its proper divisors (46695341).

13251531422131 is an equidigital number, since it uses as much as digits as its factorization.

13251531422131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46695340.

The product of its digits is 21600, while the sum is 34.

Adding to 13251531422131 its reverse (13122413515231), we get a palindrome (26373944937362).

The spelling of 13251531422131 in words is "thirteen trillion, two hundred fifty-one billion, five hundred thirty-one million, four hundred twenty-two thousand, one hundred thirty-one".