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131001031248 = 243471492111847
BaseRepresentation
bin111101000000001000…
…1010001101001010000
3110112010200112220100020
41322000101101221100
54121242230444443
6140103034423440
712315220251543
oct1720021215120
9415120486306
10131001031248
115061473778a
122147bb91b80
13c4793b3209
1464aa40485a
15361ab9a583
hex1e80451a50

131001031248 has 160 divisors (see below), whose sum is σ = 349777612800. Its totient is φ = 42227028480.

The previous prime is 131001031247. The next prime is 131001031267. The reversal of 131001031248 is 842130100131.

It is a super-2 number, since 2×1310010312482 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001031247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70925461 + ... + 70927307.

It is an arithmetic number, because the mean of its divisors is an integer number (2186110080).

Almost surely, 2131001031248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131001031248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174888806400).

131001031248 is an abundant number, since it is smaller than the sum of its proper divisors (218776581552).

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

131001031248 is a wasteful number, since it uses less digits than its factorization.

131001031248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 131001031248 its reverse (842130100131), we get a palindrome (973131131379).

The spelling of 131001031248 in words is "one hundred thirty-one billion, one million, thirty-one thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 47 48 94 141 149 188 211 282 298 376 422 447 564 596 633 752 844 894 1128 1192 1266 1688 1788 1847 2256 2384 2532 3376 3576 3694 5064 5541 7003 7152 7388 9917 10128 11082 14006 14776 19834 21009 22164 28012 29552 29751 31439 39668 42018 44328 56024 59502 62878 79336 84036 86809 88656 94317 112048 119004 125756 158672 168072 173618 188634 238008 251512 260427 275203 336144 347236 377268 389717 476016 503024 520854 550406 694472 754536 779434 825609 1041708 1100812 1169151 1388944 1477633 1509072 1558868 1651218 2083416 2201624 2338302 2955266 3117736 3302436 4166832 4403248 4432899 4676604 5910532 6235472 6604872 8865798 9353208 11821064 12934541 13209744 17731596 18316699 18706416 23642128 25869082 35463192 36633398 38803623 51738164 54950097 58067833 70926384 73266796 77607246 103476328 109900194 116135666 146533592 155214492 174203499 206952656 219800388 232271332 293067184 310428984 348406998 439600776 464542664 620857968 696813996 879201552 929085328 1393627992 2729188151 2787255984 5458376302 8187564453 10916752604 16375128906 21833505208 32750257812 43667010416 65500515624 131001031248