13212503 has 4 divisors (see below), whose sum is σ = 13226928. Its totient is φ = 13198080.

The previous prime is 13212491. The next prime is 13212523. The reversal of 13212503 is 30521231.

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 13212503 - 2⁶ = 13212439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212523) 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, 5738 + ... + 7703.

It is an arithmetic number, because the mean of its divisors is an integer number (3306732).

Almost surely, 2^13212503 is an apocalyptic number.

13212503 is a deficient number, since it is larger than the sum of its proper divisors (14425).

13212503 is an equidigital number, since it uses as much as digits as its factorization.

13212503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14424.

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

The square root of 13212503 is about 3634.9006864012. The cubic root of 13212503 is about 236.4077445611.

Adding to 13212503 its reverse (30521231), we get a palindrome (43733734).

The spelling of 13212503 in words is "thirteen million, two hundred twelve thousand, five hundred three".