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307243 is a prime number
BaseRepresentation
bin1001011000000101011
3120121110101
41023000223
534312433
610330231
72416516
oct1130053
9517411
10307243
1119a922
12129977
13a9b01
147dd7d
156107d
hex4b02b

307243 has 2 divisors, whose sum is σ = 307244. Its totient is φ = 307242.

The previous prime is 307201. The next prime is 307253. The reversal of 307243 is 342703.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-307243 is a prime.

It is a super-2 number, since 2×3072432 = 188796522098, which contains 22 as substring.

It is a d-powerful number, because it can be written as 38 + 0 + 211 + 75 + 49 + 39 .

It is a self number, because there is not a number n which added to its sum of digits gives 307243.

It is not a weakly prime, because it can be changed into another prime (307253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153621 + 153622.

It is an arithmetic number, because the mean of its divisors is an integer number (153622).

2307243 is an apocalyptic number.

307243 is a deficient number, since it is larger than the sum of its proper divisors (1).

307243 is an equidigital number, since it uses as much as digits as its factorization.

307243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 307243 is about 554.2950477859. The cubic root of 307243 is about 67.4777613068.

Adding to 307243 its reverse (342703), we get a palindrome (649946).

The spelling of 307243 in words is "three hundred seven thousand, two hundred forty-three", and thus it is an iban number.