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13130137 = 17245433
BaseRepresentation
bin110010000101…
…100110011001
3220201002011101
4302011212121
511330131022
61145231401
7216414166
oct62054631
926632141
1013130137
117458959
124492561
132949517
141a5b06d
151245627
hexc85999

13130137 has 6 divisors (see below), whose sum is σ = 13948238. Its totient is φ = 12357504.

The previous prime is 13130129. The next prime is 13130141. The reversal of 13130137 is 73103131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9803161 + 3326976 = 3131^2 + 1824^2 .

It is not a de Polignac number, because 13130137 - 23 = 13130129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13130147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22428 + ... + 23005.

Almost surely, 213130137 is an apocalyptic number.

13130137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13130137 is a deficient number, since it is larger than the sum of its proper divisors (818101).

13130137 is an equidigital number, since it uses as much as digits as its factorization.

13130137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45467 (or 45450 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 13130137 is about 3623.5530905452. The cubic root of 13130137 is about 235.9154693433.

Adding to 13130137 its reverse (73103131), we get a palindrome (86233268).

The spelling of 13130137 in words is "thirteen million, one hundred thirty thousand, one hundred thirty-seven".

Divisors: 1 17 289 45433 772361 13130137