2021331 has 8 divisors (see below), whose sum is σ = 2902480. Its totient is φ = 1243872.

The previous prime is 2021321. The next prime is 2021333. The reversal of 2021331 is 1331202.

It is a happy number.

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

It is not a de Polignac number, because 2021331 - 2⁷ = 2021203 is a prime.

It is a super-2 number, since 2×2021331² = 8171558023122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25876 + ... + 25953.

It is an arithmetic number, because the mean of its divisors is an integer number (362810).

2^2021331 is an apocalyptic number.

2021331 is a deficient number, since it is larger than the sum of its proper divisors (881149).

2021331 is a wasteful number, since it uses less digits than its factorization.

2021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51845.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2021331 is about 1421.7352074138. The cubic root of 2021331 is about 126.4384448498.

Adding to 2021331 its reverse (1331202), we get a palindrome (3352533).

It can be divided in two parts, 202 and 1331, that multiplied together give a palindrome (268862).

The spelling of 2021331 in words is "two million, twenty-one thousand, three hundred thirty-one".