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31055006340 = 22375709991
BaseRepresentation
bin11100111011000001…
…011100101010000100
32222011021110210000000
4130323001130222010
51002100040200330
622133320321300
72146400125041
oct347301345204
988137423000
1031055006340
11121968179a6
126028313230
132c0bb212c7
1417085d41c8
15c1b573560
hex73b05ca84

31055006340 has 96 divisors (see below), whose sum is σ = 97808497920. Its totient is φ = 8281323360.

The previous prime is 31055006329. The next prime is 31055006357. The reversal of 31055006340 is 4360055013.

31055006340 is a `hidden beast` number, since 3 + 10 + 550 + 0 + 63 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311256 + ... + 398735.

It is an arithmetic number, because the mean of its divisors is an integer number (1018838520).

Almost surely, 231055006340 is an apocalyptic number.

31055006340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31055006340 is an abundant number, since it is smaller than the sum of its proper divisors (66753491580).

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

31055006340 is an equidigital number, since it uses as much as digits as its factorization.

31055006340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710021 (or 710001 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The spelling of 31055006340 in words is "thirty-one billion, fifty-five million, six thousand, three hundred forty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 243 270 324 405 486 540 729 810 972 1215 1458 1620 2187 2430 2916 3645 4374 4860 7290 8748 10935 14580 21870 43740 709991 1419982 2129973 2839964 3549955 4259946 6389919 7099910 8519892 10649865 12779838 14199820 19169757 21299730 25559676 31949595 38339514 42599460 57509271 63899190 76679028 95848785 115018542 127798380 172527813 191697570 230037084 287546355 345055626 383395140 517583439 575092710 690111252 862639065 1035166878 1150185420 1552750317 1725278130 2070333756 2587917195 3105500634 3450556260 5175834390 6211001268 7763751585 10351668780 15527503170 31055006340