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13031230312212 = 2237201177142563
BaseRepresentation
bin1011110110100001000111…
…0110101000111100010100
31201010202212211211202201120
42331220101312220330110
53202000424424442322
643414244202323540
72513322015024330
oct275502166507424
951122784752646
1013031230312212
114174571873582
1215656587b95b0
13736abbbc8ab8
14330a01a107c0
15178e8b2d7a5c
hexbda11da8f14

13031230312212 has 48 divisors (see below), whose sum is σ = 34767227884032. Its totient is φ = 3721357190880.

The previous prime is 13031230312193. The next prime is 13031230312229. The reversal of 13031230312212 is 21221303213031.

13031230312212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×130312303122123 (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38402358 + ... + 38740205.

It is an arithmetic number, because the mean of its divisors is an integer number (724317247584).

Almost surely, 213031230312212 is an apocalyptic number.

13031230312212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13031230312212 is an abundant number, since it is smaller than the sum of its proper divisors (21735997571820).

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

13031230312212 is a wasteful number, since it uses less digits than its factorization.

13031230312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77144588 (or 77144586 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 13031230312212 its reverse (21221303213031), we get a palindrome (34252533525243).

The spelling of 13031230312212 in words is "thirteen trillion, thirty-one billion, two hundred thirty million, three hundred twelve thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 2011 4022 6033 8044 12066 14077 24132 28154 42231 56308 84462 168924 77142563 154285126 231427689 308570252 462855378 539997941 925710756 1079995882 1619993823 2159991764 3239987646 6479975292 155133694193 310267388386 465401082579 620534776772 930802165158 1085935859351 1861604330316 2171871718702 3257807578053 4343743437404 6515615156106 13031230312212