3825831 has 4 divisors (see below), whose sum is σ = 5101112. Its totient is φ = 2550552.

The previous prime is 3825827. The next prime is 3825851. The reversal of 3825831 is 1385283.

It is a happy number.

3825831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3825831 - 2² = 3825827 is a prime.

It is a super-2 number, since 2×3825831² = 29273965681122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3825851) 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 in 3 ways as a sum of consecutive naturals, for example, 637636 + ... + 637641.

It is an arithmetic number, because the mean of its divisors is an integer number (1275278).

Almost surely, 2^3825831 is an apocalyptic number.

3825831 is a deficient number, since it is larger than the sum of its proper divisors (1275281).

3825831 is a wasteful number, since it uses less digits than its factorization.

3825831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275280.

The product of its digits is 5760, while the sum is 30.

The square root of 3825831 is about 1955.9731593250. The cubic root of 3825831 is about 156.4018649359.

It can be divided in two parts, 3825 and 831, that added together give a triangular number (4656 = T₉₆).

The spelling of 3825831 in words is "three million, eight hundred twenty-five thousand, eight hundred thirty-one".