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12231087 = 3112811319
BaseRepresentation
bin101110101010…
…000110101111
3212000101220020
4232222012233
511112343322
61114053223
7205651101
oct56520657
925011806
1012231087
1169a4440
12411a213
1326c323b
1418a5571
15111905c
hexbaa1af

12231087 has 16 divisors (see below), whose sum is σ = 17867520. Its totient is φ = 7380800.

The previous prime is 12231083. The next prime is 12231133. The reversal of 12231087 is 78013221.

It is a cyclic number.

It is not a de Polignac number, because 12231087 - 22 = 12231083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8614 + ... + 9932.

It is an arithmetic number, because the mean of its divisors is an integer number (1116720).

Almost surely, 212231087 is an apocalyptic number.

12231087 is a deficient number, since it is larger than the sum of its proper divisors (5636433).

12231087 is a wasteful number, since it uses less digits than its factorization.

12231087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12231087 is about 3497.2970991896. The cubic root of 12231087 is about 230.4031178747.

The spelling of 12231087 in words is "twelve million, two hundred thirty-one thousand, eighty-seven".

Divisors: 1 3 11 33 281 843 1319 3091 3957 9273 14509 43527 370639 1111917 4077029 12231087