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131030013212 = 22717696739511
BaseRepresentation
bin111101000000111111…
…1110101010100011100
3110112012201002100010022
41322001333311110130
54121322140410322
6140105551531312
712316021510220
oct1720177652434
9415181070108
10131030013212
115062a03231a
1221489829b38
13c4823bc9c7
1464b01ca780
15361d4c2942
hex1e81ff551c

131030013212 has 48 divisors (see below), whose sum is σ = 277522172928. Its totient is φ = 52843518720.

The previous prime is 131030013199. The next prime is 131030013269. The reversal of 131030013212 is 212310030131.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3296537 + ... + 3336047.

It is an arithmetic number, because the mean of its divisors is an integer number (5781711936).

Almost surely, 2131030013212 is an apocalyptic number.

It is an amenable number.

131030013212 is an abundant number, since it is smaller than the sum of its proper divisors (146492159716).

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

131030013212 is a wasteful number, since it uses less digits than its factorization.

131030013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46506 (or 46504 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131030013212 its reverse (212310030131), we get a palindrome (343340043343).

The spelling of 131030013212 in words is "one hundred thirty-one billion, thirty million, thirteen thousand, two hundred twelve".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 6967 13934 27868 39511 48769 79022 97538 118439 158044 195076 236878 276577 473756 553154 671687 829073 1106308 1343374 1658146 2686748 3316292 4701809 9403618 18807236 275273137 550546274 1101092548 1926911959 3853823918 4679643329 7707647836 9359286658 18718573316 32757503303 65515006606 131030013212