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1230200131212 = 2232132628632759
BaseRepresentation
bin10001111001101101101…
…001000100111010001100
311100121100202120201202200
4101321231221010322030
5130123422213144322
62341051322121500
7154610335403553
oct21715551047214
94317322521680
101230200131212
114347a79a2718
1217a507650290
138c013281a30
144378338ad9a
15220011978ac
hex11e6da44e8c

1230200131212 has 36 divisors (see below), whose sum is σ = 3348878136240. Its totient is φ = 378523117152.

The previous prime is 1230200131201. The next prime is 1230200131253. The reversal of 1230200131212 is 2121310020321.

1230200131212 is a `hidden beast` number, since 123 + 0 + 200 + 131 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1314315912 + ... + 1314316847.

Almost surely, 21230200131212 is an apocalyptic number.

1230200131212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230200131212 is an abundant number, since it is smaller than the sum of its proper divisors (2118678005028).

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

1230200131212 is a wasteful number, since it uses less digits than its factorization.

1230200131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628632782 (or 2628632777 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1230200131212 its reverse (2121310020321), we get a palindrome (3351510151533).

The spelling of 1230200131212 in words is "one trillion, two hundred thirty billion, two hundred million, one hundred thirty-one thousand, two hundred twelve".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 117 156 234 468 2628632759 5257265518 7885898277 10514531036 15771796554 23657694831 31543593108 34172225867 47315389662 68344451734 94630779324 102516677601 136688903468 205033355202 307550032803 410066710404 615100065606 1230200131212