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12307 = 31397
BaseRepresentation
bin11000000010011
3121212211
43000103
5343212
6132551
750611
oct30023
917784
1012307
119279
127157
1357a9
1446b1
1539a7
hex3013

12307 has 4 divisors (see below), whose sum is σ = 12736. Its totient is φ = 11880.

The previous prime is 12301. The next prime is 12323. The reversal of 12307 is 70321.

Adding to 12307 its reverse (70321), we get a palindrome (82628).

12307 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

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

It is a cyclic number.

It is not a de Polignac number, because 12307 - 211 = 10259 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

12307 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (12301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168 + ... + 229.

It is an arithmetic number, because the mean of its divisors is an integer number (3184).

212307 is an apocalyptic number.

12307 is a deficient number, since it is larger than the sum of its proper divisors (429).

12307 is an equidigital number, since it uses as much as digits as its factorization.

12307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 12307 is about 110.9369190126. The cubic root of 12307 is about 23.0878805513.

The spelling of 12307 in words is "twelve thousand, three hundred seven", and thus it is an iban number.

Divisors: 1 31 397 12307