680311 has 4 divisors (see below), whose sum is σ = 703800. Its totient is φ = 656824.

The previous prime is 680299. The next prime is 680321. The reversal of 680311 is 113086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113086 = 2 ⋅56543.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680321) 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, 11701 + ... + 11758.

It is an arithmetic number, because the mean of its divisors is an integer number (175950).

2⁶⁸⁰³¹¹ is an apocalyptic number.

680311 is a deficient number, since it is larger than the sum of its proper divisors (23489).

680311 is a wasteful number, since it uses less digits than its factorization.

680311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23488.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 680311 is about 824.8096750160. The cubic root of 680311 is about 87.9499974198.

Adding to 680311 its reverse (113086), we get a palindrome (793397).

The spelling of 680311 in words is "six hundred eighty thousand, three hundred eleven".