12113513 has 4 divisors (see below), whose sum is σ = 12139920. Its totient is φ = 12087108.

The previous prime is 12113489. The next prime is 12113527. The reversal of 12113513 is 31531121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31531121 = 271 ⋅116351.

It is a cyclic number.

It is not a de Polignac number, because 12113513 - 2⁶ = 12113449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12113491 and 12113500.

It is not an unprimeable number, because it can be changed into a prime (12113593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12503 + ... + 13436.

It is an arithmetic number, because the mean of its divisors is an integer number (3034980).

Almost surely, 2^12113513 is an apocalyptic number.

It is an amenable number.

12113513 is a deficient number, since it is larger than the sum of its proper divisors (26407).

12113513 is an equidigital number, since it uses as much as digits as its factorization.

12113513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26406.

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

The square root of 12113513 is about 3480.4472413757. The cubic root of 12113513 is about 229.6624727817.

Adding to 12113513 its reverse (31531121), we get a palindrome (43644634).

The spelling of 12113513 in words is "twelve million, one hundred thirteen thousand, five hundred thirteen".