3681231 has 32 divisors (see below), whose sum is σ = 5702400. Its totient is φ = 2096640.

The previous prime is 3681217. The next prime is 3681239. The reversal of 3681231 is 1321863.

It is not a de Polignac number, because 3681231 - 2⁵ = 3681199 is a prime.

It is a super-2 number, since 2×3681231² = 27102923350722, which contains 22 as substring.

3681231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28036 + ... + 28166.

It is an arithmetic number, because the mean of its divisors is an integer number (178200).

Almost surely, 2^3681231 is an apocalyptic number.

3681231 is a deficient number, since it is larger than the sum of its proper divisors (2021169).

3681231 is a wasteful number, since it uses less digits than its factorization.

3681231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199.

The product of its digits is 864, while the sum is 24.

The square root of 3681231 is about 1918.6534340521. The cubic root of 3681231 is about 154.4060655845.

The spelling of 3681231 in words is "three million, six hundred eighty-one thousand, two hundred thirty-one".