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12087013 is a prime number
BaseRepresentation
bin101110000110…
…111011100101
3211202002021011
4232012323211
511043241023
61111022221
7204511051
oct56067345
924662234
1012087013
116906174
12406a971
1326727a3
141868c61
1510db50d
hexb86ee5

12087013 has 2 divisors, whose sum is σ = 12087014. Its totient is φ = 12087012.

The previous prime is 12087007. The next prime is 12087067. The reversal of 12087013 is 31078021.

12087013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 574564 = 3393^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 12087013 - 25 = 12086981 is a prime.

It is a super-3 number, since 3×120870133 (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12087083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6043506 + 6043507.

It is an arithmetic number, because the mean of its divisors is an integer number (6043507).

Almost surely, 212087013 is an apocalyptic number.

It is an amenable number.

12087013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12087013 is an equidigital number, since it uses as much as digits as its factorization.

12087013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 12087013 is about 3476.6381750191. The cubic root of 12087013 is about 229.4948776076.

The spelling of 12087013 in words is "twelve million, eighty-seven thousand, thirteen".