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212448343 = 439483937
BaseRepresentation
bin11001010100110…
…11010001010111
3112210202111100011
430222123101113
5413341321333
633025301051
75156531632
oct1452332127
9483674304
10212448343
11a9a15648
125b194787
13350253a3
1420302c19
15139b79cd
hexca9b457

212448343 has 4 divisors (see below), whose sum is σ = 212932720. Its totient is φ = 211963968.

The previous prime is 212448331. The next prime is 212448361. The reversal of 212448343 is 343844212.

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 2k-212448343 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 (212440343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241530 + ... + 242407.

It is an arithmetic number, because the mean of its divisors is an integer number (53233180).

Almost surely, 2212448343 is an apocalyptic number.

212448343 is a deficient number, since it is larger than the sum of its proper divisors (484377).

212448343 is an equidigital number, since it uses as much as digits as its factorization.

212448343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484376.

The product of its digits is 18432, while the sum is 31.

The square root of 212448343 is about 14575.6078089389. The cubic root of 212448343 is about 596.6932377224.

The spelling of 212448343 in words is "two hundred twelve million, four hundred forty-eight thousand, three hundred forty-three".

Divisors: 1 439 483937 212448343