312055291 has 2 divisors, whose sum is σ = 312055292. Its totient is φ = 312055290.

The previous prime is 312055279. The next prime is 312055301. The reversal of 312055291 is 192550213.

It is a strong prime.

It is an emirp because it is prime and its reverse (192550213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312055291 - 2¹⁵ = 312022523 is a prime.

It is not a weakly prime, because it can be changed into another prime (312055091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156027645 + 156027646.

It is an arithmetic number, because the mean of its divisors is an integer number (156027646).

Almost surely, 2^312055291 is an apocalyptic number.

312055291 is a deficient number, since it is larger than the sum of its proper divisors (1).

312055291 is an equidigital number, since it uses as much as digits as its factorization.

312055291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 312055291 is about 17665.0867815587. The cubic root of 312055291 is about 678.2823510808.

The spelling of 312055291 in words is "three hundred twelve million, fifty-five thousand, two hundred ninety-one".