805313 has 2 divisors, whose sum is σ = 805314. Its totient is φ = 805312.

The previous prime is 805309. The next prime is 805327. The reversal of 805313 is 313508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543169 + 262144 = 737^2 + 512^2 .

It is a cyclic number.

It is not a de Polignac number, because 805313 - 2² = 805309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (805333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402656 + 402657.

It is an arithmetic number, because the mean of its divisors is an integer number (402657).

2⁸⁰⁵³¹³ is an apocalyptic number.

It is an amenable number.

805313 is a deficient number, since it is larger than the sum of its proper divisors (1).

805313 is an equidigital number, since it uses as much as digits as its factorization.

805313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 805313 is about 897.3923333749. The cubic root of 805313 is about 93.0368297493.

The spelling of 805313 in words is "eight hundred five thousand, three hundred thirteen".