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131203202244440 = 23510945439662261
BaseRepresentation
bin11101110101010000100000…
…010000110101111101011000
3122012112220101202022021022012
4131311100200100311331120
5114144113124233310230
61143013530301445052
736431055443063234
oct3565204020657530
9565486352267265
10131203202244440
1138894a6922aa27
1212870086b70788
135829541416191
1424583a9ad75c4
151027d6a477395
hex775420435f58

131203202244440 has 64 divisors (see below), whose sum is σ = 297922534272000. Its totient is φ = 51998578352640.

The previous prime is 131203202244427. The next prime is 131203202244479. The reversal of 131203202244440 is 44442202302131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131203202244397 and 131203202244406.

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, 197782910 + ... + 198445170.

It is an arithmetic number, because the mean of its divisors is an integer number (4655039598000).

Almost surely, 2131203202244440 is an apocalyptic number.

131203202244440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131203202244440 is an abundant number, since it is smaller than the sum of its proper divisors (166719332027560).

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

131203202244440 is a wasteful number, since it uses less digits than its factorization.

131203202244440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707820 (or 707816 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 131203202244440 its reverse (44442202302131), we get a palindrome (175645404546571).

The spelling of 131203202244440 in words is "one hundred thirty-one trillion, two hundred three billion, two hundred two million, two hundred forty-four thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 20 40 109 218 436 545 872 1090 2180 4360 45439 90878 181756 227195 363512 454390 662261 908780 1324522 1817560 2649044 3311305 4952851 5298088 6622610 9905702 13245220 19811404 24764255 26490440 39622808 49528510 72186449 99057020 144372898 198114040 288745796 360932245 577491592 721864490 1443728980 2887457960 30092477579 60184955158 120369910316 150462387895 240739820632 300924775790 601849551580 1203699103160 3280080056111 6560160112222 13120320224444 16400400280555 26240640448888 32800800561110 65601601122220 131203202244440