311047349 has 2 divisors, whose sum is σ = 311047350. Its totient is φ = 311047348.

The previous prime is 311047343. The next prime is 311047367. The reversal of 311047349 is 943740113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284596900 + 26450449 = 16870^2 + 5143^2 .

It is a cyclic number.

It is not a de Polignac number, because 311047349 - 2⁴ = 311047333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311047343) 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, 155523674 + 155523675.

It is an arithmetic number, because the mean of its divisors is an integer number (155523675).

Almost surely, 2^311047349 is an apocalyptic number.

It is an amenable number.

311047349 is a deficient number, since it is larger than the sum of its proper divisors (1).

311047349 is an equidigital number, since it uses as much as digits as its factorization.

311047349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 311047349 is about 17636.5344951892. The cubic root of 311047349 is about 677.5512769204.

The spelling of 311047349 in words is "three hundred eleven million, forty-seven thousand, three hundred forty-nine".