212134432331 has 4 divisors (see below), whose sum is σ = 212141537472. Its totient is φ = 212127327192.

The previous prime is 212134432297. The next prime is 212134432333. The reversal of 212134432331 is 133234431212.

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 212134432331 - 2¹⁴ = 212134415947 is a prime.

It is a super-2 number, since 2×212134432331² (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 = 212134432294 and 212134432303.

It is not an unprimeable number, because it can be changed into a prime (212134432333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3507596 + ... + 3567561.

It is an arithmetic number, because the mean of its divisors is an integer number (53035384368).

Almost surely, 2^212134432331 is an apocalyptic number.

212134432331 is a deficient number, since it is larger than the sum of its proper divisors (7105141).

212134432331 is an equidigital number, since it uses as much as digits as its factorization.

212134432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7105140.

The product of its digits is 10368, while the sum is 29.

Adding to 212134432331 its reverse (133234431212), we get a palindrome (345368863543).

It can be divided in two parts, 21213 and 4432331, that added together give a palindrome (4453544).

The spelling of 212134432331 in words is "two hundred twelve billion, one hundred thirty-four million, four hundred thirty-two thousand, three hundred thirty-one".