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144231 = 3131367
BaseRepresentation
bin100011001101100111
321022211220
4203031213
514103411
63031423
71140333
oct431547
9238756
10144231
11993aa
126b573
1350859
143a7c3
152cb06
hex23367

144231 has 8 divisors (see below), whose sum is σ = 194304. Its totient is φ = 95160.

The previous prime is 144223. The next prime is 144241. The reversal of 144231 is 132441.

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

It is not a de Polignac number, because 144231 - 23 = 144223 is a prime.

It is a super-2 number, since 2×1442312 = 41605162722, which contains 22 as substring.

144231 is a lucky number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 144231.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144231.

It is not an unprimeable number, because it can be changed into a prime (144241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210 + ... + 576.

It is an arithmetic number, because the mean of its divisors is an integer number (24288).

2144231 is an apocalyptic number.

144231 is a deficient number, since it is larger than the sum of its proper divisors (50073).

144231 is a wasteful number, since it uses less digits than its factorization.

144231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its digits is 96, while the sum is 15.

The square root of 144231 is about 379.7775664781. Note that the first 3 decimals coincide. The cubic root of 144231 is about 52.4428402839.

Adding to 144231 its reverse (132441), we get a palindrome (276672).

The spelling of 144231 in words is "one hundred forty-four thousand, two hundred thirty-one".

Divisors: 1 3 131 367 393 1101 48077 144231