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12318305 = 52719091
BaseRepresentation
bin101110111111…
…011001100001
3212011211112112
4232333121201
511123141210
61120005105
7206463266
oct56773141
925154475
1012318305
116a53a1a
124160795
132723b4c
1418c926d
151134d05
hexbbf661

12318305 has 8 divisors (see below), whose sum is σ = 14838144. Its totient is φ = 9817200.

The previous prime is 12318283. The next prime is 12318329. The reversal of 12318305 is 50381321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12318305 - 210 = 12317281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3191 + ... + 5900.

It is an arithmetic number, because the mean of its divisors is an integer number (1854768).

Almost surely, 212318305 is an apocalyptic number.

It is an amenable number.

12318305 is a deficient number, since it is larger than the sum of its proper divisors (2519839).

12318305 is an equidigital number, since it uses as much as digits as its factorization.

12318305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9367.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 12318305 is about 3509.7442926800. The cubic root of 12318305 is about 230.9494776537.

Adding to 12318305 its reverse (50381321), we get a palindrome (62699626).

The spelling of 12318305 in words is "twelve million, three hundred eighteen thousand, three hundred five".

Divisors: 1 5 271 1355 9091 45455 2463661 12318305