191680313 has 8 divisors (see below), whose sum is σ = 214757760. Its totient is φ = 169544880.

The previous prime is 191680301. The next prime is 191680327. The reversal of 191680313 is 313086191.

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 191680313 - 2⁶ = 191680249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 191680313.

It is not an unprimeable number, because it can be changed into a prime (191680213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235073 + ... + 235886.

It is an arithmetic number, because the mean of its divisors is an integer number (26844720).

Almost surely, 2^191680313 is an apocalyptic number.

It is an amenable number.

191680313 is a deficient number, since it is larger than the sum of its proper divisors (23077447).

191680313 is a wasteful number, since it uses less digits than its factorization.

191680313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471007.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 191680313 is about 13844.8659437352. The cubic root of 191680313 is about 576.5794638355.

The spelling of 191680313 in words is "one hundred ninety-one million, six hundred eighty thousand, three hundred thirteen".