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230808217 = 792921623
BaseRepresentation
bin11011100000111…
…01101010011001
3121002022021100111
431300131222121
5433041330332
634523004321
75501560153
oct1560355231
9532267314
10230808217
111093156a2
12653696a1
1338a83113
1422921ad3
15153e2947
hexdc1da99

230808217 has 4 divisors (see below), whose sum is σ = 233729920. Its totient is φ = 227886516.

The previous prime is 230808209. The next prime is 230808223. The reversal of 230808217 is 712808032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230808217 - 23 = 230808209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230808247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460733 + ... + 1460890.

It is an arithmetic number, because the mean of its divisors is an integer number (58432480).

Almost surely, 2230808217 is an apocalyptic number.

It is an amenable number.

230808217 is a deficient number, since it is larger than the sum of its proper divisors (2921703).

230808217 is an equidigital number, since it uses as much as digits as its factorization.

230808217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921702.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 230808217 is about 15192.3736460107. The cubic root of 230808217 is about 613.4093931023.

The spelling of 230808217 in words is "two hundred thirty million, eight hundred eight thousand, two hundred seventeen".

Divisors: 1 79 2921623 230808217