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14163231 = 34721077
BaseRepresentation
bin110110000001…
…110100011111
3222122120022010
4312001310133
512111210411
61223322303
7231246135
oct66016437
928576263
1014163231
117aa4055
1248b0393
132c1b814
141c49755
15139b7a6
hexd81d1f

14163231 has 4 divisors (see below), whose sum is σ = 18884312. Its totient is φ = 9442152.

The previous prime is 14163229. The next prime is 14163257. The reversal of 14163231 is 13236141.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 14163231 - 21 = 14163229 is a prime.

It is a super-2 number, since 2×141632312 = 401194224718722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14163198 and 14163207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14163731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360536 + ... + 2360541.

It is an arithmetic number, because the mean of its divisors is an integer number (4721078).

Almost surely, 214163231 is an apocalyptic number.

14163231 is a deficient number, since it is larger than the sum of its proper divisors (4721081).

14163231 is an equidigital number, since it uses as much as digits as its factorization.

14163231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721080.

The product of its digits is 432, while the sum is 21.

The square root of 14163231 is about 3763.4068342394. The cubic root of 14163231 is about 241.9472997280.

Adding to 14163231 its reverse (13236141), we get a palindrome (27399372).

The spelling of 14163231 in words is "fourteen million, one hundred sixty-three thousand, two hundred thirty-one".

Divisors: 1 3 4721077 14163231