4381831 has 4 divisors (see below), whose sum is σ = 4387000. Its totient is φ = 4376664.

The previous prime is 4381823. The next prime is 4381847. The reversal of 4381831 is 1381834.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4381831 - 2³ = 4381823 is a prime.

It is a super-2 number, since 2×4381831² = 38400885825122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4381831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381031) 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, 981 + ... + 3118.

It is an arithmetic number, because the mean of its divisors is an integer number (1096750).

Almost surely, 2^4381831 is an apocalyptic number.

4381831 is a deficient number, since it is larger than the sum of its proper divisors (5169).

4381831 is a wasteful number, since it uses less digits than its factorization.

4381831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168.

The product of its digits is 2304, while the sum is 28.

The square root of 4381831 is about 2093.2823507592. The cubic root of 4381831 is about 163.6383937365.

The spelling of 4381831 in words is "four million, three hundred eighty-one thousand, eight hundred thirty-one".