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12203231230 = 25107199223257
BaseRepresentation
bin10110101110101111…
…01000011111111110
31011111110112101012001
423113113220133332
5144443011344410
65334525332514
7611256516421
oct132727503776
934443471161
1012203231230
1151a2451273
122446a0713a
1311c62b07a8
1483aa019b8
154b651733a
hex2d75e87fe

12203231230 has 64 divisors (see below), whose sum is σ = 22469529600. Its totient is φ = 4771160064.

The previous prime is 12203231221. The next prime is 12203231237. The reversal of 12203231230 is 3213230221.

It is a junction number, because it is equal to n+sod(n) for n = 12203231198 and 12203231207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203231237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47483262 + ... + 47483518.

It is an arithmetic number, because the mean of its divisors is an integer number (351086400).

Almost surely, 212203231230 is an apocalyptic number.

12203231230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12203231230 is a deficient number, since it is larger than the sum of its proper divisors (10266298370).

12203231230 is a wasteful number, since it uses less digits than its factorization.

12203231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12203231230 its reverse (3213230221), we get a palindrome (15416461451).

The spelling of 12203231230 in words is "twelve billion, two hundred three million, two hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 107 199 214 223 257 398 446 514 535 995 1070 1115 1285 1990 2230 2570 21293 23861 27499 42586 44377 47722 51143 54998 57311 88754 102286 106465 114622 119305 137495 212930 221885 238610 255715 274990 286555 443770 511430 573110 4748339 5472301 6132277 9496678 10944602 11404889 12264554 22809778 23741695 27361505 30661385 47483390 54723010 57024445 61322770 114048890 1220323123 2440646246 6101615615 12203231230