12503213 has 2 divisors, whose sum is σ = 12503214. Its totient is φ = 12503212.

The previous prime is 12503209. The next prime is 12503219. The reversal of 12503213 is 31230521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10259209 + 2244004 = 3203^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 12503213 - 2² = 12503209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12503191 and 12503200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12503219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251606 + 6251607.

It is an arithmetic number, because the mean of its divisors is an integer number (6251607).

Almost surely, 2^12503213 is an apocalyptic number.

It is an amenable number.

12503213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12503213 is an equidigital number, since it uses as much as digits as its factorization.

12503213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 12503213 is about 3535.9882635552. The cubic root of 12503213 is about 232.0993245437.

Adding to 12503213 its reverse (31230521), we get a palindrome (43733734).

The spelling of 12503213 in words is "twelve million, five hundred three thousand, two hundred thirteen".