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230630249 is a prime number
BaseRepresentation
bin11011011111100…
…10001101101001
3121001222020020002
431233302031221
5433020131444
634515112345
75500216253
oct1557621551
9531866202
10230630249
11109203a13
12652a26b5
1338a20105
14228b6cd3
15153a9d4e
hexdbf2369

230630249 has 2 divisors, whose sum is σ = 230630250. Its totient is φ = 230630248.

The previous prime is 230630237. The next prime is 230630263. The reversal of 230630249 is 942036032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157954624 + 72675625 = 12568^2 + 8525^2 .

It is a cyclic number.

It is not a de Polignac number, because 230630249 - 212 = 230626153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230630209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115315124 + 115315125.

It is an arithmetic number, because the mean of its divisors is an integer number (115315125).

Almost surely, 2230630249 is an apocalyptic number.

It is an amenable number.

230630249 is a deficient number, since it is larger than the sum of its proper divisors (1).

230630249 is an equidigital number, since it uses as much as digits as its factorization.

230630249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 230630249 is about 15186.5153672592. The cubic root of 230630249 is about 613.2516931807.

The spelling of 230630249 in words is "two hundred thirty million, six hundred thirty thousand, two hundred forty-nine".