212320143 has 32 divisors (see below), whose sum is σ = 360581120. Its totient is φ = 120955680.

The previous prime is 212320127. The next prime is 212320151. The reversal of 212320143 is 341023212.

It is not a de Polignac number, because 212320143 - 2⁴ = 212320127 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 (212320243) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 67833 + ... + 70893.

It is an arithmetic number, because the mean of its divisors is an integer number (11268160).

Almost surely, 2^212320143 is an apocalyptic number.

212320143 is a deficient number, since it is larger than the sum of its proper divisors (148260977).

212320143 is a wasteful number, since it uses less digits than its factorization.

212320143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444 (or 3438 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212320143 is about 14571.2093870070. The cubic root of 212320143 is about 596.5731905553.

Adding to 212320143 its reverse (341023212), we get a palindrome (553343355).

The spelling of 212320143 in words is "two hundred twelve million, three hundred twenty thousand, one hundred forty-three".