312161347 has 2 divisors, whose sum is σ = 312161348. Its totient is φ = 312161346.

The previous prime is 312161329. The next prime is 312161371. The reversal of 312161347 is 743161213.

It is a weak prime.

It is an emirp because it is prime and its reverse (743161213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312161347 - 2²³ = 303772739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312161147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156080673 + 156080674.

It is an arithmetic number, because the mean of its divisors is an integer number (156080674).

Almost surely, 2^312161347 is an apocalyptic number.

312161347 is a deficient number, since it is larger than the sum of its proper divisors (1).

312161347 is an equidigital number, since it uses as much as digits as its factorization.

312161347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 312161347 is about 17668.0883799012. The cubic root of 312161347 is about 678.3591833679.

The spelling of 312161347 in words is "three hundred twelve million, one hundred sixty-one thousand, three hundred forty-seven".