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130131105 = 35131394801
BaseRepresentation
bin1111100000110…
…10010010100001
3100001212100022120
413300122102201
5231303143410
620525054453
73140044656
oct760322241
9301770276
10130131105
1167501475
12376b7429
1320c63370
14133d5c2d
15b657570
hex7c1a4a1

130131105 has 32 divisors (see below), whose sum is σ = 225886080. Its totient is φ = 63590400.

The previous prime is 130131103. The next prime is 130131137. The reversal of 130131105 is 501131031.

It is not a de Polignac number, because 130131105 - 21 = 130131103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (130131103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24705 + ... + 29505.

It is an arithmetic number, because the mean of its divisors is an integer number (7058940).

Almost surely, 2130131105 is an apocalyptic number.

130131105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130131105 is a deficient number, since it is larger than the sum of its proper divisors (95754975).

130131105 is a wasteful number, since it uses less digits than its factorization.

130131105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961.

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 130131105 is about 11407.5021367519. The cubic root of 130131105 is about 506.7499399044.

Adding to 130131105 its reverse (501131031), we get a palindrome (631262136).

The spelling of 130131105 in words is "one hundred thirty million, one hundred thirty-one thousand, one hundred five".

Divisors: 1 3 5 13 15 39 65 139 195 417 695 1807 2085 4801 5421 9035 14403 24005 27105 62413 72015 187239 312065 667339 936195 2002017 3336695 8675407 10010085 26026221 43377035 130131105