2105631 has 12 divisors (see below), whose sum is σ = 3318120. Its totient is φ = 1276080.

The previous prime is 2105611. The next prime is 2105641. The reversal of 2105631 is 1365012.

It is not a de Polignac number, because 2105631 - 2⁶ = 2105567 is a prime.

It is a super-2 number, since 2×2105631² = 8867363816322, which contains 22 as substring.

2105631 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10536 + ... + 10733.

It is an arithmetic number, because the mean of its divisors is an integer number (276510).

2^2105631 is an apocalyptic number.

2105631 is a deficient number, since it is larger than the sum of its proper divisors (1212489).

2105631 is a wasteful number, since it uses less digits than its factorization.

2105631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21286 (or 21283 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2105631 is about 1451.0792535213. The cubic root of 2105631 is about 128.1722737314.

The spelling of 2105631 in words is "two million, one hundred five thousand, six hundred thirty-one".