306113 has 4 divisors (see below), whose sum is σ = 307248. Its totient is φ = 304980.

The previous prime is 306091. The next prime is 306121. The reversal of 306113 is 311603.

Added to its reverse (311603) it gives a triangular number (617716 = T₁₁₁₁).

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 306113 - 2⁶ = 306049 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (306133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98 + ... + 788.

It is an arithmetic number, because the mean of its divisors is an integer number (76812).

2³⁰⁶¹¹³ is an apocalyptic number.

It is an amenable number.

306113 is a deficient number, since it is larger than the sum of its proper divisors (1135).

306113 is an equidigital number, since it uses as much as digits as its factorization.

306113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 306113 is about 553.2747961005. The cubic root of 306113 is about 67.3949348570.

Adding to 306113 its reverse (311603), we get a palindrome (617716).

It can be divided in two parts, 3061 and 13, that multiplied together give a palindrome (39793).

The spelling of 306113 in words is "three hundred six thousand, one hundred thirteen".