13123315 has 4 divisors (see below), whose sum is σ = 15747984. Its totient is φ = 10498648.

The previous prime is 13123307. The next prime is 13123339. The reversal of 13123315 is 51332131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51332131 = 47 ⋅1092173.

It is a cyclic number.

It is not a de Polignac number, because 13123315 - 2³ = 13123307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123292 and 13123301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312327 + ... + 1312336.

It is an arithmetic number, because the mean of its divisors is an integer number (3936996).

Almost surely, 2^13123315 is an apocalyptic number.

13123315 is a deficient number, since it is larger than the sum of its proper divisors (2624669).

13123315 is an equidigital number, since it uses as much as digits as its factorization.

13123315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624668.

The product of its digits is 270, while the sum is 19.

The square root of 13123315 is about 3622.6116269896. The cubic root of 13123315 is about 235.8746042164.

Adding to 13123315 its reverse (51332131), we get a palindrome (64455446).

The spelling of 13123315 in words is "thirteen million, one hundred twenty-three thousand, three hundred fifteen".