212331322231 has 16 divisors (see below), whose sum is σ = 256719808000. Its totient is φ = 171552968928.

The previous prime is 212331322207. The next prime is 212331322241. The reversal of 212331322231 is 132223133212.

It is a cyclic number.

It is not a de Polignac number, because 212331322231 - 2³⁵ = 177971583863 is a prime.

It is a super-2 number, since 2×212331322231² (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 = 212331322196 and 212331322205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212331322241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3984780 + ... + 4037713.

It is an arithmetic number, because the mean of its divisors is an integer number (16044988000).

Almost surely, 2^212331322231 is an apocalyptic number.

212331322231 is a deficient number, since it is larger than the sum of its proper divisors (44388485769).

212331322231 is a wasteful number, since it uses less digits than its factorization.

212331322231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8022718.

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

Adding to 212331322231 its reverse (132223133212), we get a palindrome (344554455443).

The spelling of 212331322231 in words is "two hundred twelve billion, three hundred thirty-one million, three hundred twenty-two thousand, two hundred thirty-one".