316091 has 4 divisors (see below), whose sum is σ = 324672. Its totient is φ = 307512.

The previous prime is 316087. The next prime is 316097. The reversal of 316091 is 190613.

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

It is a cyclic number.

It is not a de Polignac number, because 316091 - 2² = 316087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316097) 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, 4235 + ... + 4308.

It is an arithmetic number, because the mean of its divisors is an integer number (81168).

2³¹⁶⁰⁹¹ is an apocalyptic number.

316091 is a deficient number, since it is larger than the sum of its proper divisors (8581).

316091 is an equidigital number, since it uses as much as digits as its factorization.

316091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8580.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 316091 is about 562.2197079434. The cubic root of 316091 is about 68.1193837078.

The spelling of 316091 in words is "three hundred sixteen thousand, ninety-one".