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13531202013 = 3719235967373
BaseRepresentation
bin11001001101000010…
…11100000111011101
31021221000100021122010
430212201130013131
5210202441431023
610114404341433
7656213214360
oct144641340735
937830307563
1013531202013
11581401338a
1227576a4879
13137845cc14
149251240d7
15542dd0093
hex32685c1dd

13531202013 has 128 divisors (see below), whose sum is σ = 23438131200. Its totient is φ = 6766924032.

The previous prime is 13531201951. The next prime is 13531202029. The reversal of 13531202013 is 31020213531.

13531202013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13531202013 - 212 = 13531197917 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531202033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 36276495 + ... + 36276867.

It is an arithmetic number, because the mean of its divisors is an integer number (183110400).

Almost surely, 213531202013 is an apocalyptic number.

It is an amenable number.

13531202013 is a deficient number, since it is larger than the sum of its proper divisors (9906929187).

13531202013 is a wasteful number, since it uses less digits than its factorization.

13531202013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 13531202013 its reverse (31020213531), we get a palindrome (44551415544).

The spelling of 13531202013 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, thirteen".

Divisors: 1 3 7 19 21 23 57 59 67 69 133 161 177 201 373 399 413 437 469 483 1119 1121 1239 1273 1311 1357 1407 1541 2611 3059 3363 3819 3953 4071 4623 7087 7833 7847 8579 8911 9177 9499 10787 11859 21261 22007 23541 24991 25737 25783 26733 27671 28497 29279 32361 49609 60053 66021 74973 75107 77349 83013 87837 90919 148827 154049 163001 174937 180159 180481 204953 225321 272757 418133 462147 474829 489003 506161 524811 525749 541443 574793 614859 636433 1141007 1254399 1424487 1474469 1518483 1577247 1724379 1727461 1909299 2926931 3323803 3423021 3543127 4023551 4423407 5182383 8780793 9617059 9971409 10321283 10629381 10921067 12070653 12092227 28014911 28851177 30963849 32763201 33912787 36276681 67319413 76447469 84044733 101738361 196104377 201958239 229342407 237389509 588313131 644342953 712168527 1933028859 4510400671 13531202013