212455431143 has 4 divisors (see below), whose sum is σ = 223637295960. Its totient is φ = 201273566328.

The previous prime is 212455431137. The next prime is 212455431161. The reversal of 212455431143 is 341134554212.

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 212455431143 - 2³⁴ = 195275561959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212455431443) 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, 5590932380 + ... + 5590932417.

It is an arithmetic number, because the mean of its divisors is an integer number (55909323990).

Almost surely, 2^212455431143 is an apocalyptic number.

212455431143 is a deficient number, since it is larger than the sum of its proper divisors (11181864817).

212455431143 is a wasteful number, since it uses less digits than its factorization.

212455431143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11181864816.

The product of its digits is 57600, while the sum is 35.

Adding to 212455431143 its reverse (341134554212), we get a palindrome (553589985355).

The spelling of 212455431143 in words is "two hundred twelve billion, four hundred fifty-five million, four hundred thirty-one thousand, one hundred forty-three".