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231020130010203 = 33531017572111509
BaseRepresentation
bin110100100001110010010000…
…110010010000010001011011
31010021222022100001220201021000
4310201302100302100101123
5220240013211240311303
62135201103235120043
766442440120022332
oct6441622062202133
91107868301821230
10231020130010203
11676790a5787966
1221ab12ba143023
139bba1492918b1
144109610aa2d19
151ba956c97bda3
hexd21c90c9045b

231020130010203 has 64 divisors (see below), whose sum is σ = 352627575465600. Its totient is φ = 149413684492800.

The previous prime is 231020130010067. The next prime is 231020130010249. The reversal of 231020130010203 is 302010031020132.

231020130010203 is a `hidden beast` number, since 2 + 310 + 20 + 1 + 300 + 10 + 20 + 3 = 666.

It is not a de Polignac number, because 231020130010203 - 217 = 231020129879131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231020130010003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108354213 + ... + 110465721.

It is an arithmetic number, because the mean of its divisors is an integer number (5509805866650).

Almost surely, 2231020130010203 is an apocalyptic number.

231020130010203 is a deficient number, since it is larger than the sum of its proper divisors (121607445455397).

231020130010203 is a wasteful number, since it uses less digits than its factorization.

231020130010203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112429 (or 2112423 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231020130010203 its reverse (302010031020132), we get a palindrome (533030161030335).

The spelling of 231020130010203 in words is "two hundred thirty-one trillion, twenty billion, one hundred thirty million, ten thousand, two hundred three".

Divisors: 1 3 9 27 53 101 159 303 477 757 909 1431 2271 2727 5353 6813 16059 20439 40121 48177 76457 120363 144531 229371 361089 688113 1083267 2064339 2111509 4052221 6334527 12156663 19003581 36469989 57010743 109409967 111909977 213262409 335729931 639787227 1007189793 1598412313 1919361681 3021569379 4795236939 5758085043 11302907677 14385710817 33908723031 43157132451 84715852589 101726169093 161439643613 254147557767 305178507279 484318930839 762442673301 1452956792517 2287328019903 4358870377551 8556301111489 25668903334467 77006710003401 231020130010203