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13131230023122 = 2319231195562357
BaseRepresentation
bin1011111100010101101001…
…0011010000110111010010
31201111022222222221102102020
42333011122103100313102
53210120224341214442
643532223115232310
72523462056400111
oct277053223206722
951438888842366
1013131230023122
114202a18021462
121580b06448696
13743367636a83
143357aa9d7c78
1517b8904b69ec
hexbf15a4d0dd2

13131230023122 has 48 divisors (see below), whose sum is σ = 28611555224832. Its totient is φ = 4012939545120.

The previous prime is 13131230023097. The next prime is 13131230023127. The reversal of 13131230023122 is 22132003213131.

It is a junction number, because it is equal to n+sod(n) for n = 13131230023092 and 13131230023101.

It is not an unprimeable number, because it can be changed into a prime (13131230023127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97714033 + ... + 97848324.

It is an arithmetic number, because the mean of its divisors is an integer number (596074067184).

Almost surely, 213131230023122 is an apocalyptic number.

13131230023122 is an abundant number, since it is smaller than the sum of its proper divisors (15480325201710).

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

13131230023122 is a wasteful number, since it uses less digits than its factorization.

13131230023122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195562431 (or 195562412 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 13131230023122 its reverse (22132003213131), we get a palindrome (35263233236253).

The spelling of 13131230023122 in words is "thirteen trillion, one hundred thirty-one billion, two hundred thirty million, twenty-three thousand, one hundred twenty-two".

Divisors: 1 2 3 6 19 31 38 57 62 93 114 186 361 589 722 1083 1178 1767 2166 3534 11191 22382 33573 67146 195562357 391124714 586687071 1173374142 3715684783 6062433067 7431369566 11147054349 12124866134 18187299201 22294108698 36374598402 70598010877 115186228273 141196021754 211794032631 230372456546 345558684819 423588065262 691117369638 2188538337187 4377076674374 6565615011561 13131230023122