13122513 has 16 divisors (see below), whose sum is σ = 19507840. Its totient is φ = 8718192.

The previous prime is 13122511. The next prime is 13122523. The reversal of 13122513 is 31522131.

13122513 is a `hidden beast` number, since 131 + 22 + 513 = 666.

13122513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13122513 - 2¹ = 13122511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9420 + ... + 10722.

It is an arithmetic number, because the mean of its divisors is an integer number (1219240).

Almost surely, 2^13122513 is an apocalyptic number.

It is an amenable number.

13122513 is a deficient number, since it is larger than the sum of its proper divisors (6385327).

13122513 is a wasteful number, since it uses less digits than its factorization.

13122513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685 (or 1679 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 13122513 is about 3622.5009316769. The cubic root of 13122513 is about 235.8697991478.

Adding to 13122513 its reverse (31522131), we get a palindrome (44644644).

The spelling of 13122513 in words is "thirteen million, one hundred twenty-two thousand, five hundred thirteen".