3671281 has 2 divisors, whose sum is σ = 3671282. Its totient is φ = 3671280.

The previous prime is 3671273. The next prime is 3671309. The reversal of 3671281 is 1821763.

It is an a-pointer prime, because the next prime (3671309) can be obtained adding 3671281 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3671056 + 225 = 1916^2 + 15^2 .

It is an emirp because it is prime and its reverse (1821763) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3671281 - 2³ = 3671273 is a prime.

It is a super-2 number, since 2×3671281² = 26956608361922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3671221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1835640 + 1835641.

It is an arithmetic number, because the mean of its divisors is an integer number (1835641).

Almost surely, 2^3671281 is an apocalyptic number.

It is an amenable number.

3671281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3671281 is an equidigital number, since it uses as much as digits as its factorization.

3671281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 3671281 is about 1916.0587151755. The cubic root of 3671281 is about 154.2668253298.

It can be divided in two parts, 36 and 71281, that added together give a palindrome (71317).

The spelling of 3671281 in words is "three million, six hundred seventy-one thousand, two hundred eighty-one".