212427803 has 16 divisors (see below), whose sum is σ = 247531776. Its totient is φ = 178532640.

The previous prime is 212427773. The next prime is 212427821. The reversal of 212427803 is 308724212.

It is a cyclic number.

It is not a de Polignac number, because 212427803 - 2²⁶ = 145318939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212427893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188600 + ... + 189722.

It is an arithmetic number, because the mean of its divisors is an integer number (15470736).

Almost surely, 2^212427803 is an apocalyptic number.

212427803 is a deficient number, since it is larger than the sum of its proper divisors (35103973).

212427803 is a wasteful number, since it uses less digits than its factorization.

212427803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 212427803 is about 14574.9031900730. The cubic root of 212427803 is about 596.6740072059.

The spelling of 212427803 in words is "two hundred twelve million, four hundred twenty-seven thousand, eight hundred three".