2021144231 has 8 divisors (see below), whose sum is σ = 2089267200. Its totient is φ = 1953204120.

The previous prime is 2021144227. The next prime is 2021144239. The reversal of 2021144231 is 1324411202.

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 2021144231 - 2² = 2021144227 is a prime.

It is a super-2 number, since 2×2021144231² = 8170048005009162722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021144239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23051 + ... + 67628.

It is an arithmetic number, because the mean of its divisors is an integer number (261158400).

Almost surely, 2^2021144231 is an apocalyptic number.

2021144231 is a deficient number, since it is larger than the sum of its proper divisors (68122969).

2021144231 is an equidigital number, since it uses as much as digits as its factorization.

2021144231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91429.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2021144231 is about 44957.1377091558. The cubic root of 2021144231 is about 1264.3455046714.

Adding to 2021144231 its reverse (1324411202), we get a palindrome (3345555433).

The spelling of 2021144231 in words is "two billion, twenty-one million, one hundred forty-four thousand, two hundred thirty-one".