13130505 has 48 divisors (see below), whose sum is σ = 24058944. Its totient is φ = 6868800.

The previous prime is 13130503. The next prime is 13130519. The reversal of 13130505 is 50503131.

It is a happy number.

13130505 is a `hidden beast` number, since 131 + 30 + 505 = 666.

It is not a de Polignac number, because 13130505 - 2¹ = 13130503 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13130503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122662 + ... + 122768.

It is an arithmetic number, because the mean of its divisors is an integer number (501228).

Almost surely, 2^13130505 is an apocalyptic number.

13130505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13130505 is a deficient number, since it is larger than the sum of its proper divisors (10928439).

13130505 is a wasteful number, since it uses less digits than its factorization.

13130505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 13130505 is about 3623.6038690784. The cubic root of 13130505 is about 235.9176733336.

Adding to 13130505 its reverse (50503131), we get a palindrome (63633636).

The spelling of 13130505 in words is "thirteen million, one hundred thirty thousand, five hundred five".