13431181 has 2 divisors, whose sum is σ = 13431182. Its totient is φ = 13431180.

The previous prime is 13431169. The next prime is 13431191. The reversal of 13431181 is 18113431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 1285956 = 3485^2 + 1134^2 .

It is a cyclic number.

It is not a de Polignac number, because 13431181 - 2⁷ = 13431053 is a prime.

It is a super-2 number, since 2×13431181² = 360793246109522, 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 (13431161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715590 + 6715591.

It is an arithmetic number, because the mean of its divisors is an integer number (6715591).

Almost surely, 2^13431181 is an apocalyptic number.

It is an amenable number.

13431181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13431181 is an equidigital number, since it uses as much as digits as its factorization.

13431181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 22.

The square root of 13431181 is about 3664.8575688558. The cubic root of 13431181 is about 237.7048633116.

The spelling of 13431181 in words is "thirteen million, four hundred thirty-one thousand, one hundred eighty-one".