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131279488216 = 23291033154773
BaseRepresentation
bin111101001000011011…
…1100000010011011000
3110112212002111222111021
41322100313200103120
54122330022110331
6140150423012224
712325141144462
oct1722067402330
9415762458437
10131279488216
1150747937608
122153929a074
13c4c1caa456
1464d53ab132
153635351211
hex1e90de04d8

131279488216 has 32 divisors (see below), whose sum is σ = 254666235600. Its totient is φ = 63369013120.

The previous prime is 131279488201. The next prime is 131279488237. The reversal of 131279488216 is 612884972131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2369406 + ... + 2424178.

Almost surely, 2131279488216 is an apocalyptic number.

It is an amenable number.

131279488216 is a deficient number, since it is larger than the sum of its proper divisors (123386747384).

131279488216 is a wasteful number, since it uses less digits than its factorization.

131279488216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65139 (or 65135 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The spelling of 131279488216 in words is "one hundred thirty-one billion, two hundred seventy-nine million, four hundred eighty-eight thousand, two hundred sixteen".

Divisors: 1 2 4 8 29 58 116 232 10331 20662 41324 54773 82648 109546 219092 299599 438184 599198 1198396 1588417 2396792 3176834 6353668 12707336 565859863 1131719726 2263439452 4526878904 16409936027 32819872054 65639744108 131279488216