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12982213 is a prime number
BaseRepresentation
bin110001100001…
…011111000101
3220102120020201
4301201133011
511310412323
61142130501
7215230006
oct61413705
926376221
1012982213
117367802
124420a31
1328c70aa
141a1d1ad
1512168ad
hexc617c5

12982213 has 2 divisors, whose sum is σ = 12982214. Its totient is φ = 12982212.

The previous prime is 12982181. The next prime is 12982243. The reversal of 12982213 is 31228921.

12982213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9474084 + 3508129 = 3078^2 + 1873^2 .

It is a cyclic number.

It is not a de Polignac number, because 12982213 - 25 = 12982181 is a prime.

It is equal to p848152 and since 12982213 and 848152 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12982243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6491106 + 6491107.

It is an arithmetic number, because the mean of its divisors is an integer number (6491107).

Almost surely, 212982213 is an apocalyptic number.

It is an amenable number.

12982213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12982213 is an equidigital number, since it uses as much as digits as its factorization.

12982213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 12982213 is about 3603.0838180647. The cubic root of 12982213 is about 235.0261808767.

The spelling of 12982213 in words is "twelve million, nine hundred eighty-two thousand, two hundred thirteen".