4021331 has 8 divisors (see below), whose sum is σ = 4272720. Its totient is φ = 3773952.

The previous prime is 4021309. The next prime is 4021349. The reversal of 4021331 is 1331204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4021331 - 2¹⁰ = 4020307 is a prime.

It is a super-2 number, since 2×4021331² = 32342206023122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4021301) 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 7 ways as a sum of consecutive naturals, for example, 1211 + ... + 3083.

It is an arithmetic number, because the mean of its divisors is an integer number (534090).

Almost surely, 2^4021331 is an apocalyptic number.

4021331 is a deficient number, since it is larger than the sum of its proper divisors (251389).

4021331 is a wasteful number, since it uses less digits than its factorization.

4021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 4021331 is about 2005.3256593382. The cubic root of 4021331 is about 159.0217788555.

Adding to 4021331 its reverse (1331204), we get a palindrome (5352535).

The spelling of 4021331 in words is "four million, twenty-one thousand, three hundred thirty-one".