12507113 has 4 divisors (see below), whose sum is σ = 12543300. Its totient is φ = 12470928.

The previous prime is 12507107. The next prime is 12507137. The reversal of 12507113 is 31170521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6416089 + 6091024 = 2533^2 + 2468^2 .

It is a cyclic number.

It is not a de Polignac number, because 12507113 - 2¹² = 12503017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12507413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17570 + ... + 18267.

It is an arithmetic number, because the mean of its divisors is an integer number (3135825).

Almost surely, 2^12507113 is an apocalyptic number.

It is an amenable number.

12507113 is a deficient number, since it is larger than the sum of its proper divisors (36187).

12507113 is an equidigital number, since it uses as much as digits as its factorization.

12507113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36186.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 12507113 is about 3536.5396929767. The cubic root of 12507113 is about 232.1234541619.

Adding to 12507113 its reverse (31170521), we get a palindrome (43677634).

The spelling of 12507113 in words is "twelve million, five hundred seven thousand, one hundred thirteen".