3312181 has 2 divisors, whose sum is σ = 3312182. Its totient is φ = 3312180.

The previous prime is 3312173. The next prime is 3312187. The reversal of 3312181 is 1812133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3294225 + 17956 = 1815^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 3312181 - 2³ = 3312173 is a prime.

It is a super-2 number, since 2×3312181² = 21941085953522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3312187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1656090 + 1656091.

It is an arithmetic number, because the mean of its divisors is an integer number (1656091).

Almost surely, 2^3312181 is an apocalyptic number.

It is an amenable number.

3312181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3312181 is an equidigital number, since it uses as much as digits as its factorization.

3312181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 3312181 is about 1819.9398341703. The cubic root of 3312181 is about 149.0635136038.

The spelling of 3312181 in words is "three million, three hundred twelve thousand, one hundred eighty-one".