212312233231 has 12 divisors (see below), whose sum is σ = 247627126920. Its totient is φ = 181501734960.

The previous prime is 212312233207. The next prime is 212312233267. The reversal of 212312233231 is 132332213212.

It is not a de Polignac number, because 212312233231 - 2³¹ = 210164749583 is a prime.

It is a super-2 number, since 2×212312233231² (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 = 212312233196 and 212312233205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212312236231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5697660 + ... + 5734801.

It is an arithmetic number, because the mean of its divisors is an integer number (20635593910).

Almost surely, 2^212312233231 is an apocalyptic number.

212312233231 is a deficient number, since it is larger than the sum of its proper divisors (35314893689).

212312233231 is a wasteful number, since it uses less digits than its factorization.

212312233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11432854 (or 11432847 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 212312233231 its reverse (132332213212), we get a palindrome (344644446443).

The spelling of 212312233231 in words is "two hundred twelve billion, three hundred twelve million, two hundred thirty-three thousand, two hundred thirty-one".