3181349 has 2 divisors, whose sum is σ = 3181350. Its totient is φ = 3181348.

The previous prime is 3181331. The next prime is 3181351. The reversal of 3181349 is 9431813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2512225 + 669124 = 1585^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 3181349 - 2¹² = 3177253 is a prime.

Together with 3181351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3181369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1590674 + 1590675.

It is an arithmetic number, because the mean of its divisors is an integer number (1590675).

Almost surely, 2^3181349 is an apocalyptic number.

It is an amenable number.

3181349 is a deficient number, since it is larger than the sum of its proper divisors (1).

3181349 is an equidigital number, since it uses as much as digits as its factorization.

3181349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 3181349 is about 1783.6336507254. The cubic root of 3181349 is about 147.0744066216.

The spelling of 3181349 in words is "three million, one hundred eighty-one thousand, three hundred forty-nine".