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230012055 = 345713792
BaseRepresentation
bin11011011010110…
…11010010010111
3121000210211020000
431231123102113
5432340341210
634453542343
75462033040
oct1555332227
9530724200
10230012055
11108921509
12650449b3
1338864910
14227958c7
15152d6ac0
hexdb5b497

230012055 has 120 divisors (see below), whose sum is σ = 513973152. Its totient is φ = 95831424.

The previous prime is 230012053. The next prime is 230012059. The reversal of 230012055 is 550210032.

It is a happy number.

It is not a de Polignac number, because 230012055 - 21 = 230012053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230012053) 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 in 119 ways as a sum of consecutive naturals, for example, 2911506 + ... + 2911584.

Almost surely, 2230012055 is an apocalyptic number.

230012055 is an abundant number, since it is smaller than the sum of its proper divisors (283961097).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230012055 is an equidigital number, since it uses as much as digits as its factorization.

230012055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 230012055 is about 15166.1483244758. The cubic root of 230012055 is about 612.7032716966.

Adding to 230012055 its reverse (550210032), we get a palindrome (780222087).

The spelling of 230012055 in words is "two hundred thirty million, twelve thousand, fifty-five".

Divisors: 1 3 5 7 9 13 15 21 27 35 39 45 63 65 79 81 91 105 117 135 189 195 237 273 315 351 395 405 455 553 567 585 711 819 945 1027 1053 1185 1365 1659 1755 2133 2457 2765 2835 3081 3555 4095 4977 5135 5265 6241 6399 7189 7371 8295 9243 10665 12285 14931 15405 18723 21567 24885 27729 31205 31995 35945 36855 43687 44793 46215 56169 64701 74655 81133 83187 93615 107835 131061 138645 168507 194103 218435 223965 243399 280845 323505 393183 405665 415935 505521 567931 582309 655305 730197 842535 970515 1179549 1216995 1703793 1965915 2190591 2527605 2839655 2911545 3538647 3650985 5111379 5897745 6571773 8518965 10952955 15334137 17693235 25556895 32858865 46002411 76670685 230012055