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13013321205 = 353171938923
BaseRepresentation
bin11000001111010011…
…11000010111110101
31020120220212012201110
430013221320113311
5203122402234310
65551144345233
7640324255653
oct140751702765
936526765643
1013013321205
115578753915
122632175219
1312c5087181
148b6435dd3
155126d3d20
hex307a785f5

13013321205 has 32 divisors (see below), whose sum is σ = 21523415040. Its totient is φ = 6707039040.

The previous prime is 13013321203. The next prime is 13013321213. The reversal of 13013321205 is 50212331031.

It is not a de Polignac number, because 13013321205 - 21 = 13013321203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013321201) 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 31 ways as a sum of consecutive naturals, for example, 314874 + ... + 353796.

It is an arithmetic number, because the mean of its divisors is an integer number (672606720).

Almost surely, 213013321205 is an apocalyptic number.

13013321205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13013321205 is a deficient number, since it is larger than the sum of its proper divisors (8510093835).

13013321205 is a wasteful number, since it uses less digits than its factorization.

13013321205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39681.

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

Adding to 13013321205 its reverse (50212331031), we get a palindrome (63225652236).

The spelling of 13013321205 in words is "thirteen billion, thirteen million, three hundred twenty-one thousand, two hundred five".

Divisors: 1 3 5 15 31 93 155 465 719 2157 3595 10785 22289 38923 66867 111445 116769 194615 334335 583845 1206613 3619839 6033065 18099195 27985637 83956911 139928185 419784555 867554747 2602664241 4337773735 13013321205