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131230230231212 = 22761179881487211
BaseRepresentation
bin11101110101101001101011…
…010000011011100010101100
3122012122111011101020020222022
4131311221223100123202230
5114200034002414344322
61143034200245205312
736433033304141420
oct3565515320334254
9565574141206868
10131230230231212
11388a5478889482
121287536a700838
13582bc5ab45568
142459811542b80
1510288ed1d9942
hex775a6b41b8ac

131230230231212 has 96 divisors (see below), whose sum is σ = 268558426160640. Its totient is φ = 54947933568000.

The previous prime is 131230230231209. The next prime is 131230230231253. The reversal of 131230230231212 is 212132032032131.

It is a super-3 number, since 3×1312302302312123 (a number of 43 digits) contains 333 as substring.

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, 269106287 + ... + 269593497.

It is an arithmetic number, because the mean of its divisors is an integer number (2797483605840).

Almost surely, 2131230230231212 is an apocalyptic number.

It is an amenable number.

131230230231212 is an abundant number, since it is smaller than the sum of its proper divisors (137328195929428).

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

131230230231212 is a wasteful number, since it uses less digits than its factorization.

131230230231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488343 (or 488341 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 131230230231212 its reverse (212132032032131), we get a palindrome (343362262263343).

The spelling of 131230230231212 in words is "one hundred thirty-one trillion, two hundred thirty billion, two hundred thirty million, two hundred thirty-one thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 61 122 179 244 358 427 716 854 881 1253 1708 1762 2506 3524 5012 6167 10919 12334 21838 24668 43676 53741 76433 107482 152866 157699 214964 305732 315398 376187 487211 630796 752374 974422 1103893 1504748 1948844 2207786 3410477 4415572 6820954 9619639 13641908 19239278 29719871 38478556 59439742 67337473 87210769 118879484 134674946 174421538 208039097 269349892 348843076 416078194 429232891 610475383 832156388 858465782 1220950766 1716931564 2441901532 3004630237 5319856909 6009260474 10639713818 12018520948 21279427636 26183206351 37238998363 52366412702 74477996726 76832687489 104732825404 148955993452 153665374978 183282444457 307330749956 366564888914 537828812423 733129777828 1075657624846 2151315249692 4686793936829 9373587873658 18747175747316 32807557557803 65615115115606 131230230231212