312142211 has 2 divisors, whose sum is σ = 312142212. Its totient is φ = 312142210.

The previous prime is 312142157. The next prime is 312142277. The reversal of 312142211 is 112241213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312142211 - 2²² = 307947907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312142211.

It is not a weakly prime, because it can be changed into another prime (312142711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156071105 + 156071106.

It is an arithmetic number, because the mean of its divisors is an integer number (156071106).

Almost surely, 2^312142211 is an apocalyptic number.

312142211 is a deficient number, since it is larger than the sum of its proper divisors (1).

312142211 is an equidigital number, since it uses as much as digits as its factorization.

312142211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 312142211 is about 17667.5468302761. The cubic root of 312142211 is about 678.3453215763.

Adding to 312142211 its reverse (112241213), we get a palindrome (424383424).

The spelling of 312142211 in words is "three hundred twelve million, one hundred forty-two thousand, two hundred eleven".