212312434043 has 4 divisors (see below), whose sum is σ = 212319685200. Its totient is φ = 212305182888.

The previous prime is 212312434031. The next prime is 212312434069. The reversal of 212312434043 is 340434213212.

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 212312434043 - 2¹⁰ = 212312433019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212312433997 and 212312434015.

It is not an unprimeable number, because it can be changed into a prime (212312434073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3581480 + ... + 3640277.

It is an arithmetic number, because the mean of its divisors is an integer number (53079921300).

Almost surely, 2^212312434043 is an apocalyptic number.

212312434043 is a deficient number, since it is larger than the sum of its proper divisors (7251157).

212312434043 is an equidigital number, since it uses as much as digits as its factorization.

212312434043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7251156.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 212312434043 its reverse (340434213212), we get a palindrome (552746647255).

The spelling of 212312434043 in words is "two hundred twelve billion, three hundred twelve million, four hundred thirty-four thousand, forty-three".