212543351 has 4 divisors (see below), whose sum is σ = 214493400. Its totient is φ = 210593304.

The previous prime is 212543341. The next prime is 212543411. The reversal of 212543351 is 153345212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212543351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212543351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212543341) 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, 974861 + ... + 975078.

It is an arithmetic number, because the mean of its divisors is an integer number (53623350).

Almost surely, 2^212543351 is an apocalyptic number.

212543351 is a deficient number, since it is larger than the sum of its proper divisors (1950049).

212543351 is a wasteful number, since it uses less digits than its factorization.

212543351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950048.

The product of its digits is 3600, while the sum is 26.

The square root of 212543351 is about 14578.8665883189. The cubic root of 212543351 is about 596.7821725691.

Adding to 212543351 its reverse (153345212), we get a palindrome (365888563).

The spelling of 212543351 in words is "two hundred twelve million, five hundred forty-three thousand, three hundred fifty-one".