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14388231 = 3112133049
BaseRepresentation
bin110110111000…
…110000000111
31000001222221110
4312320300013
512140410411
61232220103
7233204124
oct66706007
930058843
1014388231
118138100
12499a633
132c9a060
141ca774b
1513e32a6
hexdb8c07

14388231 has 24 divisors (see below), whose sum is σ = 22716400. Its totient is φ = 8046720.

The previous prime is 14388229. The next prime is 14388259. The reversal of 14388231 is 13288341.

14388231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 14388231 - 21 = 14388229 is a prime.

It is a super-2 number, since 2×143882312 = 414042382618722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14388331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3195 + ... + 6243.

Almost surely, 214388231 is an apocalyptic number.

14388231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14388231 is a deficient number, since it is larger than the sum of its proper divisors (8328169).

14388231 is a wasteful number, since it uses less digits than its factorization.

14388231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087 (or 3076 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 14388231 is about 3793.1821733210. The cubic root of 14388231 is about 243.2217826515.

It can be divided in two parts, 1438 and 8231, that added together give a palindrome (9669).

The spelling of 14388231 in words is "fourteen million, three hundred eighty-eight thousand, two hundred thirty-one".

Divisors: 1 3 11 13 33 39 121 143 363 429 1573 3049 4719 9147 33539 39637 100617 118911 368929 436007 1106787 1308021 4796077 14388231