3181663 has 2 divisors, whose sum is σ = 3181664. Its totient is φ = 3181662.

The previous prime is 3181657. The next prime is 3181679. The reversal of 3181663 is 3661813.

3181663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3181663 - 2¹⁷ = 3050591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3181603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1590831 + 1590832.

It is an arithmetic number, because the mean of its divisors is an integer number (1590832).

Almost surely, 2^3181663 is an apocalyptic number.

3181663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3181663 is an equidigital number, since it uses as much as digits as its factorization.

3181663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 3181663 is about 1783.7216711135. The cubic root of 3181663 is about 147.0792452236.

It can be divided in two parts, 3181 and 663, that added together give a square (3844 = 62²).

The spelling of 3181663 in words is "three million, one hundred eighty-one thousand, six hundred sixty-three".