316240349 has 2 divisors, whose sum is σ = 316240350. Its totient is φ = 316240348.

The previous prime is 316240333. The next prime is 316240373. The reversal of 316240349 is 943042613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165122500 + 151117849 = 12850^2 + 12293^2 .

It is an emirp because it is prime and its reverse (943042613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316240349 - 2⁴ = 316240333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316240949) 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, 158120174 + 158120175.

It is an arithmetic number, because the mean of its divisors is an integer number (158120175).

Almost surely, 2^316240349 is an apocalyptic number.

It is an amenable number.

316240349 is a deficient number, since it is larger than the sum of its proper divisors (1).

316240349 is an equidigital number, since it uses as much as digits as its factorization.

316240349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 316240349 is about 17783.1478934411. The cubic root of 316240349 is about 681.3011053433.

The spelling of 316240349 in words is "three hundred sixteen million, two hundred forty thousand, three hundred forty-nine".