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15231125130 = 23513208318749
BaseRepresentation
bin11100010111101100…
…01000011010001010
31110022111001022202120
432023312020122022
5222143132001010
610555211512110
71046304266424
oct161366103212
943274038676
1015231125130
116506633821
122b50a58636
1315896b04a0
14a46bc9814
155e226ae70
hex38bd8868a

15231125130 has 64 divisors (see below), whose sum is σ = 39387600000. Its totient is φ = 3747200256.

The previous prime is 15231125111. The next prime is 15231125141. The reversal of 15231125130 is 3152113251.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15231125130.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 802996 + ... + 821744.

It is an arithmetic number, because the mean of its divisors is an integer number (615431250).

Almost surely, 215231125130 is an apocalyptic number.

15231125130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15231125130 is an abundant number, since it is smaller than the sum of its proper divisors (24156474870).

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

15231125130 is a wasteful number, since it uses less digits than its factorization.

15231125130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20855.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 15231125130 its reverse (3152113251), we get a palindrome (18383238381).

The spelling of 15231125130 in words is "fifteen billion, two hundred thirty-one million, one hundred twenty-five thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 2083 4166 6249 10415 12498 18749 20830 27079 31245 37498 54158 56247 62490 81237 93745 112494 135395 162474 187490 243737 270790 281235 406185 487474 562470 731211 812370 1218685 1462422 2437370 3656055 7312110 39054167 78108334 117162501 195270835 234325002 390541670 507704171 585812505 1015408342 1171625010 1523112513 2538520855 3046225026 5077041710 7615562565 15231125130