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BaseRepresentation
bin110100000011101101
3101211111101
4310003231
523310404
64323101
71545442
oct640355
9354441
10213229
11136225
12a3491
1376093
14579c9
15432a4
hex340ed

213229 has 2 divisors, whose sum is σ = 213230. Its totient is φ = 213228.

The previous prime is 213223. The next prime is 213247. The reversal of 213229 is 922312.

It can be divided in two parts, 2 and 13229, that added together give a palindrome (13231).

It is a happy number.

213229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 104329 = 330^2 + 323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-213229 is a prime.

213229 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106614 + 106615.

It is an arithmetic number, because the mean of its divisors is an integer number (106615).

2213229 is an apocalyptic number.

It is an amenable number.

213229 is a deficient number, since it is larger than the sum of its proper divisors (1).

213229 is an equidigital number, since it uses as much as digits as its factorization.

213229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 213229 is about 461.7672573927. The cubic root of 213229 is about 59.7423208679.

The spelling of 213229 in words is "two hundred thirteen thousand, two hundred twenty-nine".