212230403 has 16 divisors (see below), whose sum is σ = 265214976. Its totient is φ = 164989440.

The previous prime is 212230373. The next prime is 212230423. The reversal of 212230403 is 304032212.

It is not a de Polignac number, because 212230403 - 2¹⁴ = 212214019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212230423) 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 15 ways as a sum of consecutive naturals, for example, 32675 + ... + 38627.

It is an arithmetic number, because the mean of its divisors is an integer number (16575936).

Almost surely, 2^212230403 is an apocalyptic number.

212230403 is a deficient number, since it is larger than the sum of its proper divisors (52984573).

212230403 is a wasteful number, since it uses less digits than its factorization.

212230403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6434.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 212230403 is about 14568.1297015094. The cubic root of 212230403 is about 596.4891287831.

Adding to 212230403 its reverse (304032212), we get a palindrome (516262615).

The spelling of 212230403 in words is "two hundred twelve million, two hundred thirty thousand, four hundred three".