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201031331340 = 223572711176557
BaseRepresentation
bin1011101100111001100…
…1101010111000001100
3201012220012220202010110
42323032121222320030
511243203010100330
6232204051040020
720344513056630
oct2731631527014
9635805822113
10201031331340
1178290a44754
1232b64ba0010
1315c59ba92c8
149a31066dc0
155368c93db0
hex2ece66ae0c

201031331340 has 96 divisors (see below), whose sum is σ = 643541197824. Its totient is φ = 45932808960.

The previous prime is 201031331273. The next prime is 201031331357. The reversal of 201031331340 is 43133130102.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 1050342 + ... + 1226898.

It is an arithmetic number, because the mean of its divisors is an integer number (6703554144).

Almost surely, 2201031331340 is an apocalyptic number.

201031331340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201031331340 is an abundant number, since it is smaller than the sum of its proper divisors (442509866484).

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

201031331340 is a wasteful number, since it uses less digits than its factorization.

201031331340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179287 (or 179285 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 201031331340 its reverse (43133130102), we get a palindrome (244164461442).

The spelling of 201031331340 in words is "two hundred one billion, thirty-one million, three hundred thirty-one thousand, three hundred forty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 2711 5422 8133 10844 13555 16266 18977 27110 32532 37954 40665 54220 56931 75908 81330 94885 113862 162660 176557 189770 227724 284655 353114 379540 529671 569310 706228 882785 1059342 1138620 1235899 1765570 2118684 2471798 2648355 3531140 3707697 4943596 5296710 6179495 7415394 10593420 12358990 14830788 18538485 24717980 37076970 74153940 478646027 957292054 1435938081 1914584108 2393230135 2871876162 3350522189 4786460270 5743752324 6701044378 7179690405 9572920540 10051566567 13402088756 14359380810 16752610945 20103133134 28718761620 33505221890 40206266268 50257832835 67010443780 100515665670 201031331340