312312213211 has 2 divisors, whose sum is σ = 312312213212. Its totient is φ = 312312213210.

The previous prime is 312312213179. The next prime is 312312213223. The reversal of 312312213211 is 112312213213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312312213211 - 2⁵ = 312312213179 is a prime.

It is not a weakly prime, because it can be changed into another prime (312312213251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156156106605 + 156156106606.

It is an arithmetic number, because the mean of its divisors is an integer number (156156106606).

Almost surely, 2^312312213211 is an apocalyptic number.

312312213211 is a deficient number, since it is larger than the sum of its proper divisors (1).

312312213211 is an equidigital number, since it uses as much as digits as its factorization.

312312213211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

Adding to 312312213211 its reverse (112312213213), we get a palindrome (424624426424).

The spelling of 312312213211 in words is "three hundred twelve billion, three hundred twelve million, two hundred thirteen thousand, two hundred eleven".