304781273 has 2 divisors, whose sum is σ = 304781274. Its totient is φ = 304781272.

The previous prime is 304781263. The next prime is 304781327. The reversal of 304781273 is 372187403.

Together with next prime (304781327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176570944 + 128210329 = 13288^2 + 11323^2 .

It is a cyclic number.

It is not a de Polignac number, because 304781273 - 2¹⁸ = 304519129 is a prime.

It is not a weakly prime, because it can be changed into another prime (304781263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152390636 + 152390637.

It is an arithmetic number, because the mean of its divisors is an integer number (152390637).

Almost surely, 2^304781273 is an apocalyptic number.

It is an amenable number.

304781273 is a deficient number, since it is larger than the sum of its proper divisors (1).

304781273 is an equidigital number, since it uses as much as digits as its factorization.

304781273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 304781273 is about 17457.9859376733. The cubic root of 304781273 is about 672.9706019083.

The spelling of 304781273 in words is "three hundred four million, seven hundred eighty-one thousand, two hundred seventy-three".