13123115 has 4 divisors (see below), whose sum is σ = 15747744. Its totient is φ = 10498488.

The previous prime is 13123111. The next prime is 13123147. The reversal of 13123115 is 51132131.

13123115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13123115 - 2² = 13123111 is a prime.

It is a super-2 number, since 2×13123115² = 344432294606450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123093 and 13123102.

It is not an unprimeable number, because it can be changed into a prime (13123111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312307 + ... + 1312316.

It is an arithmetic number, because the mean of its divisors is an integer number (3936936).

Almost surely, 2^13123115 is an apocalyptic number.

13123115 is a deficient number, since it is larger than the sum of its proper divisors (2624629).

13123115 is an equidigital number, since it uses as much as digits as its factorization.

13123115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624628.

The product of its digits is 90, while the sum is 17.

The square root of 13123115 is about 3622.5840224900. The cubic root of 13123115 is about 235.8734059632.

Adding to 13123115 its reverse (51132131), we get a palindrome (64255246).

The spelling of 13123115 in words is "thirteen million, one hundred twenty-three thousand, one hundred fifteen".