13171031 has 2 divisors, whose sum is σ = 13171032. Its totient is φ = 13171030.

The previous prime is 13171013. The next prime is 13171069. The reversal of 13171031 is 13017131.

Together with previous prime (13171013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13171031 is a prime.

It is a super-2 number, since 2×13171031² = 346952115205922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13173031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6585515 + 6585516.

It is an arithmetic number, because the mean of its divisors is an integer number (6585516).

Almost surely, 2^13171031 is an apocalyptic number.

13171031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13171031 is an equidigital number, since it uses as much as digits as its factorization.

13171031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63, while the sum is 17.

The square root of 13171031 is about 3629.1915077604. The cubic root of 13171031 is about 236.1601362170.

Adding to 13171031 its reverse (13017131), we get a palindrome (26188162).

The spelling of 13171031 in words is "thirteen million, one hundred seventy-one thousand, thirty-one".