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12244231 = 27744203
BaseRepresentation
bin101110101101…
…010100000111
3212001001221001
4232231110013
511113303411
61114234131
7206034316
oct56552407
925031831
1012244231
116a032aa
124125947
1326c920c
1418aa27d
15111cdc1
hexbad507

12244231 has 4 divisors (see below), whose sum is σ = 12288712. Its totient is φ = 12199752.

The previous prime is 12244223. The next prime is 12244241. The reversal of 12244231 is 13244221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13244221 = 54124481.

It is a cyclic number.

It is not a de Polignac number, because 12244231 - 23 = 12244223 is a prime.

It is a super-2 number, since 2×122442312 = 299842385562722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12244199 and 12244208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12244201) 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, 21825 + ... + 22378.

It is an arithmetic number, because the mean of its divisors is an integer number (3072178).

Almost surely, 212244231 is an apocalyptic number.

12244231 is a deficient number, since it is larger than the sum of its proper divisors (44481).

12244231 is an equidigital number, since it uses as much as digits as its factorization.

12244231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44480.

The product of its digits is 384, while the sum is 19.

The square root of 12244231 is about 3499.1757600898. The cubic root of 12244231 is about 230.4856217004.

Adding to 12244231 its reverse (13244221), we get a palindrome (25488452).

The spelling of 12244231 in words is "twelve million, two hundred forty-four thousand, two hundred thirty-one".

Divisors: 1 277 44203 12244231