306490235309 has 4 divisors (see below), whose sum is σ = 311684985120. Its totient is φ = 301295485500.

The previous prime is 306490235291. The next prime is 306490235329. The reversal of 306490235309 is 903532094603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 306490235309 - 2⁸ = 306490235053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 306490235309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306490235329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2597374817 + ... + 2597374934.

It is an arithmetic number, because the mean of its divisors is an integer number (77921246280).

Almost surely, 2^306490235309 is an apocalyptic number.

It is an amenable number.

306490235309 is a deficient number, since it is larger than the sum of its proper divisors (5194749811).

306490235309 is an equidigital number, since it uses as much as digits as its factorization.

306490235309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194749810.

The product of its (nonzero) digits is 524880, while the sum is 44.

The spelling of 306490235309 in words is "three hundred six billion, four hundred ninety million, two hundred thirty-five thousand, three hundred nine".