319120691 has 2 divisors, whose sum is σ = 319120692. Its totient is φ = 319120690.

The previous prime is 319120679. The next prime is 319120721. The reversal of 319120691 is 196021913.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319120691 is a prime.

It is a Chen prime.

It is equal to p_17230289 and since 319120691 and 17230289 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (319120661) 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 as a sum of consecutive naturals, namely, 159560345 + 159560346.

It is an arithmetic number, because the mean of its divisors is an integer number (159560346).

Almost surely, 2^319120691 is an apocalyptic number.

319120691 is a deficient number, since it is larger than the sum of its proper divisors (1).

319120691 is an equidigital number, since it uses as much as digits as its factorization.

319120691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 319120691 is about 17863.9494793285. The cubic root of 319120691 is about 683.3633051035.

The spelling of 319120691 in words is "three hundred nineteen million, one hundred twenty thousand, six hundred ninety-one".