212803 has 4 divisors (see below), whose sum is σ = 213928. Its totient is φ = 211680.

The previous prime is 212801. The next prime is 212827. The reversal of 212803 is 308212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212803 - 2¹ = 212801 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (212801) 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 3 ways as a sum of consecutive naturals, for example, 201 + ... + 682.

It is an arithmetic number, because the mean of its divisors is an integer number (53482).

2²¹²⁸⁰³ is an apocalyptic number.

212803 is a deficient number, since it is larger than the sum of its proper divisors (1125).

212803 is an equidigital number, since it uses as much as digits as its factorization.

212803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212803 is about 461.3057554378. The cubic root of 212803 is about 59.7025089034.

It can be divided in two parts, 212 and 803, that multiplied together give a triangular number (170236 = T₅₈₃).

The spelling of 212803 in words is "two hundred twelve thousand, eight hundred three".