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131420200212 = 223272771882703
BaseRepresentation
bin111101001100101000…
…0010001110100010100
3110120012220021220001200
41322121100101310110
54123122032401322
6140212410552500
712331500161520
oct1723120216424
9416186256050
10131420200212
115080a305614
1221578438730
13c5151a68a2
146509d58d80
1536428988ac
hex1e99411d14

131420200212 has 72 divisors (see below), whose sum is σ = 381029166336. Its totient is φ = 37413054144.

The previous prime is 131420200193. The next prime is 131420200243. The reversal of 131420200212 is 212002024131.

It is a happy number.

131420200212 is a `hidden beast` number, since 1 + 31 + 420 + 2 + 0 + 0 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 871548 + ... + 1011155.

Almost surely, 2131420200212 is an apocalyptic number.

131420200212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131420200212 is an abundant number, since it is smaller than the sum of its proper divisors (249608966124).

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

131420200212 is a wasteful number, since it uses less digits than its factorization.

131420200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882997 (or 1882992 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 131420200212 its reverse (212002024131), we get a palindrome (343422224343).

The spelling of 131420200212 in words is "one hundred thirty-one billion, four hundred twenty million, two hundred thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 277 554 831 1108 1662 1939 2493 3324 3878 4986 5817 7756 9972 11634 17451 23268 34902 69804 1882703 3765406 5648109 7530812 11296218 13178921 16944327 22592436 26357842 33888654 39536763 52715684 67777308 79073526 118610289 158147052 237220578 474441156 521508731 1043017462 1564526193 2086034924 3129052386 3650561117 4693578579 6258104772 7301122234 9387157158 10951683351 14602244468 18774314316 21903366702 32855050053 43806733404 65710100106 131420200212