212503 has 8 divisors (see below), whose sum is σ = 223776. Its totient is φ = 201600.

The previous prime is 212501. The next prime is 212507. The reversal of 212503 is 305212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212503 - 2¹ = 212501 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2875 + ... + 2947.

It is an arithmetic number, because the mean of its divisors is an integer number (27972).

2²¹²⁵⁰³ is an apocalyptic number.

212503 is a deficient number, since it is larger than the sum of its proper divisors (11273).

212503 is an equidigital number, since it uses as much as digits as its factorization.

212503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 212503 is about 460.9804768100. The cubic root of 212503 is about 59.6744404146.

Adding to 212503 its reverse (305212), we get a palindrome (517715).

The spelling of 212503 in words is "two hundred twelve thousand, five hundred three".