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4263231 = 37203011
BaseRepresentation
bin10000010000110100111111
322000121001110
4100100310333
52042410411
6231213103
751144150
oct20206477
98017043
104263231
112452035
121517193
13b6362b
147cd927
155932a6
hex410d3f

4263231 has 8 divisors (see below), whose sum is σ = 6496384. Its totient is φ = 2436120.

The previous prime is 4263227. The next prime is 4263253. The reversal of 4263231 is 1323624.

It is a happy number.

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

It is not a de Polignac number, because 4263231 - 22 = 4263227 is a prime.

It is a super-2 number, since 2×42632312 = 36350277118722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 203011 = 4263231 / (4 + 2 + 6 + 3 + 2 + 3 + 1).

It is a d-powerful number, because it can be written as 411 + 29 + 66 + 33 + 211 + 39 + 1 .

It is a Duffinian number.

4263231 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4263198 and 4263207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4263131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101485 + ... + 101526.

It is an arithmetic number, because the mean of its divisors is an integer number (812048).

Almost surely, 24263231 is an apocalyptic number.

4263231 is a deficient number, since it is larger than the sum of its proper divisors (2233153).

4263231 is a wasteful number, since it uses less digits than its factorization.

4263231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203021.

The product of its digits is 864, while the sum is 21.

The square root of 4263231 is about 2064.7593080066. The cubic root of 4263231 is about 162.1485073194.

Adding to 4263231 its reverse (1323624), we get a palindrome (5586855).

The spelling of 4263231 in words is "four million, two hundred sixty-three thousand, two hundred thirty-one".

Divisors: 1 3 7 21 203011 609033 1421077 4263231