212304005 has 16 divisors (see below), whose sum is σ = 268749120. Its totient is φ = 160558848.

The previous prime is 212303999. The next prime is 212304011. The reversal of 212304005 is 500403212.

It is an interprime number because it is at equal distance from previous prime (212303999) and next prime (212304011).

It is a cyclic number.

It is not a de Polignac number, because 212304005 - 2⁴ = 212303989 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 47549 + ... + 51821.

It is an arithmetic number, because the mean of its divisors is an integer number (16796820).

Almost surely, 2^212304005 is an apocalyptic number.

It is an amenable number.

212304005 is a deficient number, since it is larger than the sum of its proper divisors (56445115).

212304005 is a wasteful number, since it uses less digits than its factorization.

212304005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4820.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 212304005 is about 14570.6556132523. The cubic root of 212304005 is about 596.5580754216.

Adding to 212304005 its reverse (500403212), we get a palindrome (712707217).

The spelling of 212304005 in words is "two hundred twelve million, three hundred four thousand, five".