212031803 has 8 divisors (see below), whose sum is σ = 224703072. Its totient is φ = 199382656.

The previous prime is 212031763. The next prime is 212031817. The reversal of 212031803 is 308130212.

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 212031803 - 2⁶ = 212031739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212031823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16826 + ... + 26592.

It is an arithmetic number, because the mean of its divisors is an integer number (28087884).

Almost surely, 2^212031803 is an apocalyptic number.

212031803 is a deficient number, since it is larger than the sum of its proper divisors (12671269).

212031803 is a wasteful number, since it uses less digits than its factorization.

212031803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11061.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 212031803 is about 14561.3118571096. The cubic root of 212031803 is about 596.3030107559.

The spelling of 212031803 in words is "two hundred twelve million, thirty-one thousand, eight hundred three".