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343213 = 13171553
BaseRepresentation
bin1010011110010101101
3122102210121
41103302231
541440323
611204541
72626423
oct1236255
9572717
10343213
11214952
12146751
13c02b0
148d113
156ba5d
hex53cad

343213 has 8 divisors (see below), whose sum is σ = 391608. Its totient is φ = 297984.

The previous prime is 343199. The next prime is 343219. The reversal of 343213 is 312343.

It can be written as a sum of positive squares in 4 ways, for example, as 4489 + 338724 = 67^2 + 582^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 343213 - 213 = 335021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343219) 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, 556 + ... + 997.

It is an arithmetic number, because the mean of its divisors is an integer number (48951).

2343213 is an apocalyptic number.

It is an amenable number.

343213 is a deficient number, since it is larger than the sum of its proper divisors (48395).

343213 is a wasteful number, since it uses less digits than its factorization.

343213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583.

The product of its digits is 216, while the sum is 16.

The square root of 343213 is about 585.8438358471. The cubic root of 343213 is about 70.0144867976.

Adding to 343213 its reverse (312343), we get a palindrome (655556).

The spelling of 343213 in words is "three hundred forty-three thousand, two hundred thirteen".

Divisors: 1 13 17 221 1553 20189 26401 343213