212402303 has 4 divisors (see below), whose sum is σ = 212515248. Its totient is φ = 212289360.

The previous prime is 212402291. The next prime is 212402321. The reversal of 212402303 is 303204212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212402303 - 2⁴ = 212402287 is a prime.

It is a super-2 number, since 2×212402303² = 90229476639407618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212404303) 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 3 ways as a sum of consecutive naturals, for example, 53603 + ... + 57428.

It is an arithmetic number, because the mean of its divisors is an integer number (53128812).

Almost surely, 2^212402303 is an apocalyptic number.

212402303 is a deficient number, since it is larger than the sum of its proper divisors (112945).

212402303 is a wasteful number, since it uses less digits than its factorization.

212402303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112944.

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

The square root of 212402303 is about 14574.0283724165. The cubic root of 212402303 is about 596.6501311787.

Adding to 212402303 its reverse (303204212), we get a palindrome (515606515).

The spelling of 212402303 in words is "two hundred twelve million, four hundred two thousand, three hundred three".