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230006251 = 352765213
BaseRepresentation
bin11011011010110…
…01110111101011
3121000210112021001
431231121313223
5432340200001
634453455431
75462010106
oct1555316753
9530715231
10230006251
11108918112
1265041577
1338862097
142279373d
15152d5001
hexdb59deb

230006251 has 4 divisors (see below), whose sum is σ = 230074992. Its totient is φ = 229937512.

The previous prime is 230006213. The next prime is 230006281. The reversal of 230006251 is 152600032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230006251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230006201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29080 + ... + 36133.

It is an arithmetic number, because the mean of its divisors is an integer number (57518748).

Almost surely, 2230006251 is an apocalyptic number.

230006251 is a deficient number, since it is larger than the sum of its proper divisors (68741).

230006251 is an equidigital number, since it uses as much as digits as its factorization.

230006251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68740.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 230006251 is about 15165.9569760698. The cubic root of 230006251 is about 612.6981181120.

Adding to 230006251 its reverse (152600032), we get a palindrome (382606283).

The spelling of 230006251 in words is "two hundred thirty million, six thousand, two hundred fifty-one".

Divisors: 1 3527 65213 230006251