609311 has 4 divisors (see below), whose sum is σ = 641400. Its totient is φ = 577224.

The previous prime is 609307. The next prime is 609313. The reversal of 609311 is 113906.

609311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 609311 - 2² = 609307 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 (609313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16016 + ... + 16053.

It is an arithmetic number, because the mean of its divisors is an integer number (160350).

2⁶⁰⁹³¹¹ is an apocalyptic number.

609311 is a deficient number, since it is larger than the sum of its proper divisors (32089).

609311 is a wasteful number, since it uses less digits than its factorization.

609311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32088.

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

The square root of 609311 is about 780.5837559160. The cubic root of 609311 is about 84.7773179368. Note that the first 3 decimals are identical.

The spelling of 609311 in words is "six hundred nine thousand, three hundred eleven".