304206731 has 2 divisors, whose sum is σ = 304206732. Its totient is φ = 304206730.

The previous prime is 304206713. The next prime is 304206761. The reversal of 304206731 is 137602403.

Together with previous prime (304206713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304206731 is a prime.

It is a super-2 number, since 2×304206731² = 185083470371412722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 304206731.

It is not a weakly prime, because it can be changed into another prime (304206761) 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, 152103365 + 152103366.

It is an arithmetic number, because the mean of its divisors is an integer number (152103366).

Almost surely, 2^304206731 is an apocalyptic number.

304206731 is a deficient number, since it is larger than the sum of its proper divisors (1).

304206731 is an equidigital number, since it uses as much as digits as its factorization.

304206731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 304206731 is about 17441.5231846304. The cubic root of 304206731 is about 672.5474644848.

The spelling of 304206731 in words is "three hundred four million, two hundred six thousand, seven hundred thirty-one".