13130138 has 12 divisors (see below), whose sum is σ = 22910922. Its totient is φ = 5627160.

The previous prime is 13130129. The next prime is 13130141. The reversal of 13130138 is 83103131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6744409 + 6385729 = 2597^2 + 2527^2 .

It is a Curzon number.

It is an unprimeable number.

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, 66893 + ... + 67088.

Almost surely, 2^13130138 is an apocalyptic number.

13130138 is a deficient number, since it is larger than the sum of its proper divisors (9780784).

13130138 is a wasteful number, since it uses less digits than its factorization.

13130138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133997 (or 133990 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 13130138 is about 3623.5532285314. The cubic root of 13130138 is about 235.9154753325.

Adding to 13130138 its reverse (83103131), we get a palindrome (96233269).

The spelling of 13130138 in words is "thirteen million, one hundred thirty thousand, one hundred thirty-eight".