316191 has 4 divisors (see below), whose sum is σ = 421592. Its totient is φ = 210792.

The previous prime is 316189. The next prime is 316193. The reversal of 316191 is 191613.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (316189) and next prime (316193).

It is not a de Polignac number, because 316191 - 2¹ = 316189 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52696 + ... + 52701.

It is an arithmetic number, because the mean of its divisors is an integer number (105398).

2³¹⁶¹⁹¹ is an apocalyptic number.

316191 is a deficient number, since it is larger than the sum of its proper divisors (105401).

316191 is a wasteful number, since it uses less digits than its factorization.

316191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105400.

The product of its digits is 162, while the sum is 21.

The square root of 316191 is about 562.3086341148. The cubic root of 316191 is about 68.1265664707.

The spelling of 316191 in words is "three hundred sixteen thousand, one hundred ninety-one".