12504313 has 4 divisors (see below), whose sum is σ = 12518388. Its totient is φ = 12490240.

The previous prime is 12504311. The next prime is 12504353. The reversal of 12504313 is 31340521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31340521 = 563 ⋅55667.

It can be written as a sum of positive squares in 2 ways, for example, as 3341584 + 9162729 = 1828^2 + 3027^2 .

It is a cyclic number.

It is not a de Polignac number, because 12504313 - 2¹ = 12504311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12504311) 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, 5608 + ... + 7513.

It is an arithmetic number, because the mean of its divisors is an integer number (3129597).

Almost surely, 2^12504313 is an apocalyptic number.

It is an amenable number.

12504313 is a deficient number, since it is larger than the sum of its proper divisors (14075).

12504313 is an equidigital number, since it uses as much as digits as its factorization.

12504313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14074.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12504313 is about 3536.1438036370. The cubic root of 12504313 is about 232.1061308415.

Adding to 12504313 its reverse (31340521), we get a palindrome (43844834).

The spelling of 12504313 in words is "twelve million, five hundred four thousand, three hundred thirteen".