2021332312031 has 4 divisors (see below), whose sum is σ = 2029385429064. Its totient is φ = 2013279195000.

The previous prime is 2021332312007. The next prime is 2021332312033. The reversal of 2021332312031 is 1302132331202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021332312031 is a prime.

It is a super-2 number, since 2×2021332312031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021332311988 and 2021332312006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021332312033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4026558140 + ... + 4026558641.

It is an arithmetic number, because the mean of its divisors is an integer number (507346357266).

Almost surely, 2^{2021332312031} is an apocalyptic number.

2021332312031 is a deficient number, since it is larger than the sum of its proper divisors (8053117033).

2021332312031 is an equidigital number, since it uses as much as digits as its factorization.

2021332312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053117032.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2021332312031 its reverse (1302132331202), we get a palindrome (3323464643233).

The spelling of 2021332312031 in words is "two trillion, twenty-one billion, three hundred thirty-two million, three hundred twelve thousand, thirty-one".