2021234312031 has 32 divisors (see below), whose sum is σ = 3139146565632. Its totient is φ = 1144480481760.

The previous prime is 2021234311969. The next prime is 2021234312047. The reversal of 2021234312031 is 1302134321202.

It is not a de Polignac number, because 2021234312031 - 2⁹ = 2021234311519 is a prime.

It is a super-2 number, since 2×2021234312031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021234311992 and 2021234312010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021234312231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30932745 + ... + 30998018.

It is an arithmetic number, because the mean of its divisors is an integer number (98098330176).

Almost surely, 2^{2021234312031} is an apocalyptic number.

2021234312031 is a deficient number, since it is larger than the sum of its proper divisors (1117912253601).

2021234312031 is a wasteful number, since it uses less digits than its factorization.

2021234312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61930843.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2021234312031 its reverse (1302134321202), we get a palindrome (3323368633233).

It can be divided in two parts, 202123 and 4312031, that added together give a palindrome (4514154).

The spelling of 2021234312031 in words is "two trillion, twenty-one billion, two hundred thirty-four million, three hundred twelve thousand, thirty-one".