306120313 has 2 divisors, whose sum is σ = 306120314. Its totient is φ = 306120312.

The previous prime is 306120299. The next prime is 306120329. The reversal of 306120313 is 313021603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287913024 + 18207289 = 16968^2 + 4267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-306120313 is a prime.

It is not a weakly prime, because it can be changed into another prime (306120383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153060156 + 153060157.

It is an arithmetic number, because the mean of its divisors is an integer number (153060157).

Almost surely, 2^306120313 is an apocalyptic number.

It is an amenable number.

306120313 is a deficient number, since it is larger than the sum of its proper divisors (1).

306120313 is an equidigital number, since it uses as much as digits as its factorization.

306120313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 306120313 is about 17496.2942647865. The cubic root of 306120313 is about 673.9547153812.

Adding to 306120313 its reverse (313021603), we get a palindrome (619141916).

The spelling of 306120313 in words is "three hundred six million, one hundred twenty thousand, three hundred thirteen".