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212248319 = 972188127
BaseRepresentation
bin11001010011010…
…10011011111111
3112210101022221212
430221222123333
5413313421234
633021115035
75155036523
oct1451523377
9483338855
10212248319
11a9899338
125b0b8a7b
1334c8532a
142028dd83
15139785ce
hexca6a6ff

212248319 has 4 divisors (see below), whose sum is σ = 214436544. Its totient is φ = 210060096.

The previous prime is 212248313. The next prime is 212248327. The reversal of 212248319 is 913842212.

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

It is not a de Polignac number, because 212248319 - 28 = 212248063 is a prime.

It is a super-3 number, since 3×2122483193 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212248313) 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, 1093967 + ... + 1094160.

It is an arithmetic number, because the mean of its divisors is an integer number (53609136).

Almost surely, 2212248319 is an apocalyptic number.

212248319 is a deficient number, since it is larger than the sum of its proper divisors (2188225).

212248319 is an equidigital number, since it uses as much as digits as its factorization.

212248319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188224.

The product of its digits is 6912, while the sum is 32.

The square root of 212248319 is about 14568.7445924486. The cubic root of 212248319 is about 596.5059130552.

The spelling of 212248319 in words is "two hundred twelve million, two hundred forty-eight thousand, three hundred nineteen".

Divisors: 1 97 2188127 212248319