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12311200230 = 235797604379
BaseRepresentation
bin10110111011100111…
…00000000111100110
31011202222200202210220
423131303200013212
5200203131401410
65353343425210
7614040322020
oct133563400746
934688622726
1012311200230
115248395a4a
122476bb5206
131212784584
1484b0a9010
154c0c43070
hex2ddce01e6

12311200230 has 64 divisors (see below), whose sum is σ = 34116042240. Its totient is φ = 2784973824.

The previous prime is 12311200229. The next prime is 12311200247. The reversal of 12311200230 is 3200211321.

It is a super-2 number, since 2×123112002302 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281820 + ... + 322559.

It is an arithmetic number, because the mean of its divisors is an integer number (533063160).

Almost surely, 212311200230 is an apocalyptic number.

12311200230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12311200230 is an abundant number, since it is smaller than the sum of its proper divisors (21804842010).

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

12311200230 is a wasteful number, since it uses less digits than its factorization.

12311200230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604493.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12311200230 its reverse (3200211321), we get a palindrome (15511411551).

The spelling of 12311200230 in words is "twelve billion, three hundred eleven million, two hundred thousand, two hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 97 105 194 210 291 485 582 679 970 1358 1455 2037 2910 3395 4074 6790 10185 20370 604379 1208758 1813137 3021895 3626274 4230653 6043790 8461306 9065685 12691959 18131370 21153265 25383918 42306530 58624763 63459795 117249526 126919590 175874289 293123815 351748578 410373341 586247630 820746682 879371445 1231120023 1758742890 2051866705 2462240046 4103733410 6155600115 12311200230