310091 has 2 divisors, whose sum is σ = 310092. Its totient is φ = 310090.

The previous prime is 310087. The next prime is 310111. The reversal of 310091 is 190013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 310091 - 2² = 310087 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 310091.

It is not a weakly prime, because it can be changed into another prime (310021) 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 as a sum of consecutive naturals, namely, 155045 + 155046.

It is an arithmetic number, because the mean of its divisors is an integer number (155046).

2³¹⁰⁰⁹¹ is an apocalyptic number.

310091 is a deficient number, since it is larger than the sum of its proper divisors (1).

310091 is an equidigital number, since it uses as much as digits as its factorization.

310091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 310091 is about 556.8581506991. The cubic root of 310091 is about 67.6856162264.

The spelling of 310091 in words is "three hundred ten thousand, ninety-one".