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117800231 is a prime number
BaseRepresentation
bin1110000010101…
…11110100100111
322012122212112112
413001113310213
5220124101411
615404511235
72630166623
oct701276447
9265585475
10117800231
116054a06a
123354b51b
131b5368a3
1411906183
15a51db8b
hex7057d27

117800231 has 2 divisors, whose sum is σ = 117800232. Its totient is φ = 117800230.

The previous prime is 117800213. The next prime is 117800281. The reversal of 117800231 is 132008711.

It is a happy number.

Together with previous prime (117800213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117800231 - 210 = 117799207 is a prime.

It is a super-3 number, since 3×1178002313 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 117800197 and 117800206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117800201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58900115 + 58900116.

It is an arithmetic number, because the mean of its divisors is an integer number (58900116).

Almost surely, 2117800231 is an apocalyptic number.

117800231 is a deficient number, since it is larger than the sum of its proper divisors (1).

117800231 is an equidigital number, since it uses as much as digits as its factorization.

117800231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 117800231 is about 10853.5814826259. The cubic root of 117800231 is about 490.2098656763.

Adding to 117800231 its reverse (132008711), we get a palindrome (249808942).

The spelling of 117800231 in words is "one hundred seventeen million, eight hundred thousand, two hundred thirty-one".