2021324231 has 16 divisors (see below), whose sum is σ = 2098588800. Its totient is φ = 1945555200.

The previous prime is 2021324219. The next prime is 2021324237. The reversal of 2021324231 is 1324231202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021324231 is a prime.

It is a super-2 number, since 2×2021324231² = 8171503293655482722, 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 (2021324237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1210265 + ... + 1211933.

It is an arithmetic number, because the mean of its divisors is an integer number (131161800).

Almost surely, 2^2021324231 is an apocalyptic number.

2021324231 is a deficient number, since it is larger than the sum of its proper divisors (77264569).

2021324231 is a wasteful number, since it uses less digits than its factorization.

2021324231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2021324231 is about 44959.1395713930. The cubic root of 2021324231 is about 1264.3830371133.

Adding to 2021324231 its reverse (1324231202), we get a palindrome (3345555433).

It can be divided in two parts, 20213 and 24231, that added together give a palindrome (44444).

The spelling of 2021324231 in words is "two billion, twenty-one million, three hundred twenty-four thousand, two hundred thirty-one".