43212312005 has 8 divisors (see below), whose sum is σ = 51963033600. Its totient is φ = 34497676816.

The previous prime is 43212311993. The next prime is 43212312029. The reversal of 43212312005 is 50021321234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43212312005 - 2¹² = 43212307909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9018965 + ... + 9023754.

It is an arithmetic number, because the mean of its divisors is an integer number (6495379200).

Almost surely, 2^43212312005 is an apocalyptic number.

It is an amenable number.

43212312005 is a deficient number, since it is larger than the sum of its proper divisors (8750721595).

43212312005 is a wasteful number, since it uses less digits than its factorization.

43212312005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18043203.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 43212312005 its reverse (50021321234), we get a palindrome (93233633239).

The spelling of 43212312005 in words is "forty-three billion, two hundred twelve million, three hundred twelve thousand, five".