13331172131 has 2 divisors, whose sum is σ = 13331172132. Its totient is φ = 13331172130.

The previous prime is 13331172121. The next prime is 13331172161. The reversal of 13331172131 is 13127113331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13331172131 - 2⁶ = 13331172067 is a prime.

It is a super-2 number, since 2×13331172131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13331172131.

It is not a weakly prime, because it can be changed into another prime (13331172121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6665586065 + 6665586066.

It is an arithmetic number, because the mean of its divisors is an integer number (6665586066).

Almost surely, 2^13331172131 is an apocalyptic number.

13331172131 is a deficient number, since it is larger than the sum of its proper divisors (1).

13331172131 is an equidigital number, since it uses as much as digits as its factorization.

13331172131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 26.

Adding to 13331172131 its reverse (13127113331), we get a palindrome (26458285462).

The spelling of 13331172131 in words is "thirteen billion, three hundred thirty-one million, one hundred seventy-two thousand, one hundred thirty-one".