306013 has 4 divisors (see below), whose sum is σ = 309088. Its totient is φ = 302940.

The previous prime is 306011. The next prime is 306023. The reversal of 306013 is 310603.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310603 = 263 ⋅1181.

It is a cyclic number.

It is not a de Polignac number, because 306013 - 2¹ = 306011 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305984 and 306002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (77272).

2³⁰⁶⁰¹³ is an apocalyptic number.

It is an amenable number.

306013 is a deficient number, since it is larger than the sum of its proper divisors (3075).

306013 is a wasteful number, since it uses less digits than its factorization.

306013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 306013 is about 553.1844177126. The cubic root of 306013 is about 67.3875952716.

Adding to 306013 its reverse (310603), we get a palindrome (616616).

The spelling of 306013 in words is "three hundred six thousand, thirteen".