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12303231 = 37695333
BaseRepresentation
bin101110111011…
…101101111111
3212011001212020
4232323231333
511122200411
61115411223
7206401323
oct56735577
925131766
1012303231
116a43666
124153b13
13271a025
1418c3983
151130606
hexbbbb7f

12303231 has 8 divisors (see below), whose sum is σ = 16428720. Its totient is φ = 8189952.

The previous prime is 12303227. The next prime is 12303233. The reversal of 12303231 is 13230321.

12303231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12303231 - 22 = 12303227 is a prime.

It is a super-2 number, since 2×123032312 = 302738986078722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12303231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (2053590).

Almost surely, 212303231 is an apocalyptic number.

12303231 is a deficient number, since it is larger than the sum of its proper divisors (4125489).

12303231 is an equidigital number, since it uses as much as digits as its factorization.

12303231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 12303231 is about 3507.5961854239. The cubic root of 12303231 is about 230.8552343457.

Adding to 12303231 its reverse (13230321), we get a palindrome (25533552).

The spelling of 12303231 in words is "twelve million, three hundred three thousand, two hundred thirty-one".

Divisors: 1 3 769 2307 5333 15999 4101077 12303231