304122397 has 2 divisors, whose sum is σ = 304122398. Its totient is φ = 304122396.

The previous prime is 304122389. The next prime is 304122419. The reversal of 304122397 is 793221403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159617956 + 144504441 = 12634^2 + 12021^2 .

It is a cyclic number.

It is not a de Polignac number, because 304122397 - 2³ = 304122389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304122337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152061198 + 152061199.

It is an arithmetic number, because the mean of its divisors is an integer number (152061199).

Almost surely, 2^304122397 is an apocalyptic number.

It is an amenable number.

304122397 is a deficient number, since it is larger than the sum of its proper divisors (1).

304122397 is an equidigital number, since it uses as much as digits as its factorization.

304122397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 304122397 is about 17439.1053956331. The cubic root of 304122397 is about 672.4853095375.

The spelling of 304122397 in words is "three hundred four million, one hundred twenty-two thousand, three hundred ninety-seven".