212313012231 has 4 divisors (see below), whose sum is σ = 283084016312. Its totient is φ = 141542008152.

The previous prime is 212313012221. The next prime is 212313012239. The reversal of 212313012231 is 132210313212.

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

It is not a de Polignac number, because 212313012231 - 2¹³ = 212313004039 is a prime.

It is a super-2 number, since 2×212313012231² (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 = 212313012198 and 212313012207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212313012239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35385502036 + ... + 35385502041.

It is an arithmetic number, because the mean of its divisors is an integer number (70771004078).

Almost surely, 2^212313012231 is an apocalyptic number.

212313012231 is a deficient number, since it is larger than the sum of its proper divisors (70771004081).

212313012231 is an equidigital number, since it uses as much as digits as its factorization.

212313012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70771004080.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212313012231 its reverse (132210313212), we get a palindrome (344523325443).

The spelling of 212313012231 in words is "two hundred twelve billion, three hundred thirteen million, twelve thousand, two hundred thirty-one".