309690713 has 8 divisors (see below), whose sum is σ = 325714176. Its totient is φ = 294044400.

The previous prime is 309690707. The next prime is 309690721. The reversal of 309690713 is 317096903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 309690713 - 2⁴ = 309690697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309690743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92603 + ... + 95888.

It is an arithmetic number, because the mean of its divisors is an integer number (40714272).

Almost surely, 2^309690713 is an apocalyptic number.

It is an amenable number.

309690713 is a deficient number, since it is larger than the sum of its proper divisors (16023463).

309690713 is a wasteful number, since it uses less digits than its factorization.

309690713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188575.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 309690713 is about 17598.0315092342. The cubic root of 309690713 is about 676.5647925397.

The spelling of 309690713 in words is "three hundred nine million, six hundred ninety thousand, seven hundred thirteen".