4000331 has 4 divisors (see below), whose sum is σ = 4006872. Its totient is φ = 3993792.

The previous prime is 4000309. The next prime is 4000343. The reversal of 4000331 is 1330004.

4000331 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 a cyclic number.

It is not a de Polignac number, because 4000331 - 2⁶ = 4000267 is a prime.

It is a super-2 number, since 2×4000331² = 32005296219122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000301) 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, 2246 + ... + 3611.

It is an arithmetic number, because the mean of its divisors is an integer number (1001718).

Almost surely, 2^4000331 is an apocalyptic number.

4000331 is a deficient number, since it is larger than the sum of its proper divisors (6541).

4000331 is an equidigital number, since it uses as much as digits as its factorization.

4000331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6540.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 4000331 is about 2000.0827482882. The cubic root of 4000331 is about 158.7444836573.

Adding to 4000331 its reverse (1330004), we get a palindrome (5330335).

The spelling of 4000331 in words is "four million, three hundred thirty-one", and thus it is an aban number.