Search a number
-
+
343309 is a prime number
BaseRepresentation
bin1010011110100001101
3122102221011
41103310031
541441214
611205221
72626621
oct1236415
9572834
10343309
11214a2a
12146811
13c0355
148d181
156bac4
hex53d0d

343309 has 2 divisors, whose sum is σ = 343310. Its totient is φ = 343308.

The previous prime is 343307. The next prime is 343313. The reversal of 343309 is 903343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299209 + 44100 = 547^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 343309 - 21 = 343307 is a prime.

It is a super-2 number, since 2×3433092 = 235722138962, which contains 22 as substring.

Together with 343307, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 343309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171654 + 171655.

It is an arithmetic number, because the mean of its divisors is an integer number (171655).

2343309 is an apocalyptic number.

It is an amenable number.

343309 is a deficient number, since it is larger than the sum of its proper divisors (1).

343309 is an equidigital number, since it uses as much as digits as its factorization.

343309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 343309 is about 585.9257632158. The cubic root of 343309 is about 70.0210140991.

The spelling of 343309 in words is "three hundred forty-three thousand, three hundred nine".