309088340361349 has 2 divisors, whose sum is σ = 309088340361350. Its totient is φ = 309088340361348.

The previous prime is 309088340361319. The next prime is 309088340361461. The reversal of 309088340361349 is 943163043880903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238881537258849 + 70206803102500 = 15455793^2 + 8378950^2 .

It is an emirp because it is prime and its reverse (943163043880903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 309088340361349 - 2⁷ = 309088340361221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (309088340361319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154544170180674 + 154544170180675.

It is an arithmetic number, because the mean of its divisors is an integer number (154544170180675).

Almost surely, 2^{309088340361349} is an apocalyptic number.

It is an amenable number.

309088340361349 is a deficient number, since it is larger than the sum of its proper divisors (1).

309088340361349 is an equidigital number, since it uses as much as digits as its factorization.

309088340361349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40310784, while the sum is 61.

The spelling of 309088340361349 in words is "three hundred nine trillion, eighty-eight billion, three hundred forty million, three hundred sixty-one thousand, three hundred forty-nine".