3391631 has 2 divisors, whose sum is σ = 3391632. Its totient is φ = 3391630.

The previous prime is 3391627. The next prime is 3391639. The reversal of 3391631 is 1361933.

3391631 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 3391631 - 2² = 3391627 is a prime.

It is a super-2 number, since 2×3391631² = 23006321680322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3391631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3391639) 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, 1695815 + 1695816.

It is an arithmetic number, because the mean of its divisors is an integer number (1695816).

Almost surely, 2^3391631 is an apocalyptic number.

3391631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3391631 is an equidigital number, since it uses as much as digits as its factorization.

3391631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 26.

The square root of 3391631 is about 1841.6381294923. The cubic root of 3391631 is about 150.2459815851.

The spelling of 3391631 in words is "three million, three hundred ninety-one thousand, six hundred thirty-one".