212312033231 has 4 divisors (see below), whose sum is σ = 212327547552. Its totient is φ = 212296518912.

The previous prime is 212312033201. The next prime is 212312033233. The reversal of 212312033231 is 132330213212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212312033231 is a prime.

It is a super-2 number, since 2×212312033231² (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 = 212312033197 and 212312033206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212312033233) 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, 7736615 + ... + 7764008.

It is an arithmetic number, because the mean of its divisors is an integer number (53081886888).

Almost surely, 2^212312033231 is an apocalyptic number.

212312033231 is a deficient number, since it is larger than the sum of its proper divisors (15514321).

212312033231 is a wasteful number, since it uses less digits than its factorization.

212312033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15514320.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 212312033231 its reverse (132330213212), we get a palindrome (344642246443).

The spelling of 212312033231 in words is "two hundred twelve billion, three hundred twelve million, thirty-three thousand, two hundred thirty-one".