212031110231 has 2 divisors, whose sum is σ = 212031110232. Its totient is φ = 212031110230.

The previous prime is 212031110167. The next prime is 212031110237. The reversal of 212031110231 is 132011130212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212031110231 - 2⁶ = 212031110167 is a prime.

It is a super-2 number, since 2×212031110231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212031110237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106015555115 + 106015555116.

It is an arithmetic number, because the mean of its divisors is an integer number (106015555116).

Almost surely, 2^212031110231 is an apocalyptic number.

212031110231 is a deficient number, since it is larger than the sum of its proper divisors (1).

212031110231 is an equidigital number, since it uses as much as digits as its factorization.

212031110231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 212031110231 its reverse (132011130212), we get a palindrome (344042240443).

The spelling of 212031110231 in words is "two hundred twelve billion, thirty-one million, one hundred ten thousand, two hundred thirty-one".