306402013 has 2 divisors, whose sum is σ = 306402014. Its totient is φ = 306402012.

The previous prime is 306402011. The next prime is 306402043. The reversal of 306402013 is 310204603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305445529 + 956484 = 17477^2 + 978^2 .

It is a cyclic number.

It is not a de Polignac number, because 306402013 - 2¹ = 306402011 is a prime.

Together with 306402011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306402011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153201006 + 153201007.

It is an arithmetic number, because the mean of its divisors is an integer number (153201007).

Almost surely, 2^306402013 is an apocalyptic number.

It is an amenable number.

306402013 is a deficient number, since it is larger than the sum of its proper divisors (1).

306402013 is an equidigital number, since it uses as much as digits as its factorization.

306402013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 306402013 is about 17504.3426897442. The cubic root of 306402013 is about 674.1613823126.

Adding to 306402013 its reverse (310204603), we get a palindrome (616606616).

The spelling of 306402013 in words is "three hundred six million, four hundred two thousand, thirteen".