212331023231 has 2 divisors, whose sum is σ = 212331023232. Its totient is φ = 212331023230.

The previous prime is 212331023227. The next prime is 212331023263. The reversal of 212331023231 is 132320133212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212331023231 - 2² = 212331023227 is a prime.

It is a super-2 number, since 2×212331023231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212331023197 and 212331023206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212331023221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106165511615 + 106165511616.

It is an arithmetic number, because the mean of its divisors is an integer number (106165511616).

Almost surely, 2^212331023231 is an apocalyptic number.

212331023231 is a deficient number, since it is larger than the sum of its proper divisors (1).

212331023231 is an equidigital number, since it uses as much as digits as its factorization.

212331023231 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212331023231 its reverse (132320133212), we get a palindrome (344651156443).

The spelling of 212331023231 in words is "two hundred twelve billion, three hundred thirty-one million, twenty-three thousand, two hundred thirty-one".