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12082231 = 71726033
BaseRepresentation
bin101110000101…
…110000110111
3211201211201001
4232011300313
511043112411
61110544131
7204461110
oct56056067
924654631
1012082231
116902617
124068047
132670565
141867207
1510d9dc1
hexb85c37

12082231 has 4 divisors (see below), whose sum is σ = 13808272. Its totient is φ = 10356192.

The previous prime is 12082211. The next prime is 12082237. The reversal of 12082231 is 13228021.

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

It is not a de Polignac number, because 12082231 - 215 = 12049463 is a prime.

It is a super-3 number, since 3×120822313 (a number of 22 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 junction number, because it is equal to n+sod(n) for n = 12082199 and 12082208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12082237) 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 3 ways as a sum of consecutive naturals, for example, 863010 + ... + 863023.

It is an arithmetic number, because the mean of its divisors is an integer number (3452068).

Almost surely, 212082231 is an apocalyptic number.

12082231 is a deficient number, since it is larger than the sum of its proper divisors (1726041).

12082231 is an equidigital number, since it uses as much as digits as its factorization.

12082231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726040.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12082231 is about 3475.9503736388. The cubic root of 12082231 is about 229.4646085007.

The spelling of 12082231 in words is "twelve million, eighty-two thousand, two hundred thirty-one".

Divisors: 1 7 1726033 12082231