212023312331 has 2 divisors, whose sum is σ = 212023312332. Its totient is φ = 212023312330.

The previous prime is 212023312321. The next prime is 212023312343. The reversal of 212023312331 is 133213320212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212023312331 - 2³⁴ = 194843443147 is a prime.

It is a super-2 number, since 2×212023312331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212023312297 and 212023312306.

It is not a weakly prime, because it can be changed into another prime (212023312321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011656165 + 106011656166.

It is an arithmetic number, because the mean of its divisors is an integer number (106011656166).

Almost surely, 2^212023312331 is an apocalyptic number.

212023312331 is a deficient number, since it is larger than the sum of its proper divisors (1).

212023312331 is an equidigital number, since it uses as much as digits as its factorization.

212023312331 is an evil number, because the sum of its binary digits is even.

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

Adding to 212023312331 its reverse (133213320212), we get a palindrome (345236632543).

The spelling of 212023312331 in words is "two hundred twelve billion, twenty-three million, three hundred twelve thousand, three hundred thirty-one".