312304211 has 2 divisors, whose sum is σ = 312304212. Its totient is φ = 312304210.

The previous prime is 312304193. The next prime is 312304253. The reversal of 312304211 is 112403213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312304211 - 2²⁶ = 245195347 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312304211.

It is not a weakly prime, because it can be changed into another prime (312300211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156152105 + 156152106.

It is an arithmetic number, because the mean of its divisors is an integer number (156152106).

Almost surely, 2^312304211 is an apocalyptic number.

312304211 is a deficient number, since it is larger than the sum of its proper divisors (1).

312304211 is an equidigital number, since it uses as much as digits as its factorization.

312304211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 312304211 is about 17672.1309128243. The cubic root of 312304211 is about 678.4626537117.

Adding to 312304211 its reverse (112403213), we get a palindrome (424707424).

The spelling of 312304211 in words is "three hundred twelve million, three hundred four thousand, two hundred eleven".