306640113 has 32 divisors (see below), whose sum is σ = 459043200. Its totient is φ = 180773376.

The previous prime is 306640111. The next prime is 306640121. The reversal of 306640113 is 311046603.

It is not a de Polignac number, because 306640113 - 2¹ = 306640111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (306640111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153958 + ... + 155936.

It is an arithmetic number, because the mean of its divisors is an integer number (14345100).

Almost surely, 2^306640113 is an apocalyptic number.

It is an amenable number.

306640113 is a deficient number, since it is larger than the sum of its proper divisors (152403087).

306640113 is a wasteful number, since it uses less digits than its factorization.

306640113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 306640113 is about 17511.1425383954. The cubic root of 306640113 is about 674.3359636988.

Adding to 306640113 its reverse (311046603), we get a palindrome (617686716).

The spelling of 306640113 in words is "three hundred six million, six hundred forty thousand, one hundred thirteen".