212234243231 has 4 divisors (see below), whose sum is σ = 212241768600. Its totient is φ = 212226717864.

The previous prime is 212234243149. The next prime is 212234243257. The reversal of 212234243231 is 132342432212.

212234243231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 212234243231 - 2²⁶ = 212167134367 is a prime.

It is a super-2 number, since 2×212234243231² (a number of 23 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 = 212234243194 and 212234243203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212234243261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3720221 + ... + 3776838.

It is an arithmetic number, because the mean of its divisors is an integer number (53060442150).

Almost surely, 2^212234243231 is an apocalyptic number.

212234243231 is a deficient number, since it is larger than the sum of its proper divisors (7525369).

212234243231 is an equidigital number, since it uses as much as digits as its factorization.

212234243231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7525368.

The product of its digits is 13824, while the sum is 29.

Adding to 212234243231 its reverse (132342432212), we get a palindrome (344576675443).

The spelling of 212234243231 in words is "two hundred twelve billion, two hundred thirty-four million, two hundred forty-three thousand, two hundred thirty-one".