305041397 has 2 divisors, whose sum is σ = 305041398. Its totient is φ = 305041396.

The previous prime is 305041393. The next prime is 305041411. The reversal of 305041397 is 793140503.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202606756 + 102434641 = 14234^2 + 10121^2 .

It is a cyclic number.

It is not a de Polignac number, because 305041397 - 2² = 305041393 is a prime.

It is a super-3 number, since 3×305041397³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305041393) 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, 152520698 + 152520699.

It is an arithmetic number, because the mean of its divisors is an integer number (152520699).

Almost surely, 2^305041397 is an apocalyptic number.

It is an amenable number.

305041397 is a deficient number, since it is larger than the sum of its proper divisors (1).

305041397 is an equidigital number, since it uses as much as digits as its factorization.

305041397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 305041397 is about 17465.4343490221. The cubic root of 305041397 is about 673.1620025857.

The spelling of 305041397 in words is "three hundred five million, forty-one thousand, three hundred ninety-seven".