3405631 has 4 divisors (see below), whose sum is σ = 3426192. Its totient is φ = 3385072.

The previous prime is 3405613. The next prime is 3405637. The reversal of 3405631 is 1365043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3405631 - 2¹⁹ = 2881343 is a prime.

It is a super-2 number, since 2×3405631² = 23196645016322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10030 + ... + 10363.

It is an arithmetic number, because the mean of its divisors is an integer number (856548).

Almost surely, 2^3405631 is an apocalyptic number.

3405631 is a deficient number, since it is larger than the sum of its proper divisors (20561).

3405631 is a wasteful number, since it uses less digits than its factorization.

3405631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20560.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 3405631 is about 1845.4351790296. The cubic root of 3405631 is about 150.4524266216.

The spelling of 3405631 in words is "three million, four hundred five thousand, six hundred thirty-one".