212343 has 8 divisors (see below), whose sum is σ = 290928. Its totient is φ = 137664.

The previous prime is 212297. The next prime is 212353. The reversal of 212343 is 343212.

212343 = 57² + 58² + ... + 93².

212343 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 212343 - 2¹⁰ = 211319 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846 + ... + 1067.

It is an arithmetic number, because the mean of its divisors is an integer number (36366).

2²¹²³⁴³ is an apocalyptic number.

212343 is a deficient number, since it is larger than the sum of its proper divisors (78585).

212343 is a wasteful number, since it uses less digits than its factorization.

212343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953.

The product of its digits is 144, while the sum is 15.

The square root of 212343 is about 460.8069009900. The cubic root of 212343 is about 59.6594597512.

Adding to 212343 its reverse (343212), we get a palindrome (555555).

It can be divided in two parts, 212 and 343, that added together give a palindrome (555).

The spelling of 212343 in words is "two hundred twelve thousand, three hundred forty-three", and thus it is an iban number.