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1213100131195 = 523213117919559
BaseRepresentation
bin10001101001110010011…
…001110000001101111011
311021222020000220201121201
4101221302121300031323
5124333412113144240
62325142425515031
7153433515660241
oct21516231601573
94258200821551
101213100131195
114285224425a7
12177134942a77
138a519647b24
1442a002ba791
152184ed1ad9a
hex11a7267037b

1213100131195 has 48 divisors (see below), whose sum is σ = 1542025900800. Its totient is φ = 916005970880.

The previous prime is 1213100131141. The next prime is 1213100131249. The reversal of 1213100131195 is 5911310013121.

It is an interprime number because it is at equal distance from previous prime (1213100131141) and next prime (1213100131249).

It is not a de Polignac number, because 1213100131195 - 235 = 1178740392827 is a prime.

It is a super-2 number, since 2×12131001311952 (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62012826 + ... + 62032384.

It is an arithmetic number, because the mean of its divisors is an integer number (32125539600).

Almost surely, 21213100131195 is an apocalyptic number.

1213100131195 is a deficient number, since it is larger than the sum of its proper divisors (328925769605).

1213100131195 is a wasteful number, since it uses less digits than its factorization.

1213100131195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19920 (or 19897 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 28.

The spelling of 1213100131195 in words is "one trillion, two hundred thirteen billion, one hundred million, one hundred thirty-one thousand, one hundred ninety-five".

Divisors: 1 5 23 115 131 179 529 655 895 2645 3013 4117 15065 19559 20585 23449 69299 94691 97795 117245 346495 449857 473455 539327 2249285 2562229 2696635 3501061 10346711 12404521 12811145 17505305 51733555 58931267 62022605 80524403 294656335 402622015 458638991 1355419141 1852061269 2293194955 6777095705 9260306345 10548696793 52743483965 242620026239 1213100131195