212304315 has 16 divisors (see below), whose sum is σ = 340800768. Its totient is φ = 112857696.

The previous prime is 212304293. The next prime is 212304317. The reversal of 212304315 is 513403212.

It is not a de Polignac number, because 212304315 - 2¹⁵ = 212271547 is a prime.

It is a super-3 number, since 3×212304315³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212304291 and 212304300.

It is not an unprimeable number, because it can be changed into a prime (212304317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18447 + ... + 27656.

It is an arithmetic number, because the mean of its divisors is an integer number (21300048).

Almost surely, 2^212304315 is an apocalyptic number.

212304315 is a deficient number, since it is larger than the sum of its proper divisors (128496453).

212304315 is a wasteful number, since it uses less digits than its factorization.

212304315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46418.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 212304315 is about 14570.6662510676. Note that the first 3 decimals coincide. The cubic root of 212304315 is about 596.5583657802.

Adding to 212304315 its reverse (513403212), we get a palindrome (725707527).

The spelling of 212304315 in words is "two hundred twelve million, three hundred four thousand, three hundred fifteen".