3531181 has 2 divisors, whose sum is σ = 3531182. Its totient is φ = 3531180.

The previous prime is 3531173. The next prime is 3531193. The reversal of 3531181 is 1811353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2340900 + 1190281 = 1530^2 + 1091^2 .

It is an emirp because it is prime and its reverse (1811353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3531181 - 2³ = 3531173 is a prime.

It is a super-2 number, since 2×3531181² = 24938478509522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3531161) 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, 1765590 + 1765591.

It is an arithmetic number, because the mean of its divisors is an integer number (1765591).

Almost surely, 2^3531181 is an apocalyptic number.

It is an amenable number.

3531181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3531181 is an equidigital number, since it uses as much as digits as its factorization.

3531181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 22.

The square root of 3531181 is about 1879.1436879600. The cubic root of 3531181 is about 152.2789918752.

The spelling of 3531181 in words is "three million, five hundred thirty-one thousand, one hundred eighty-one".