320711 has 4 divisors (see below), whose sum is σ = 331800. Its totient is φ = 309624.

The previous prime is 320699. The next prime is 320713. The reversal of 320711 is 117023.

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 320711 - 2⁶ = 320647 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 (320713) 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, 5501 + ... + 5558.

It is an arithmetic number, because the mean of its divisors is an integer number (82950).

2³²⁰⁷¹¹ is an apocalyptic number.

320711 is a deficient number, since it is larger than the sum of its proper divisors (11089).

320711 is a wasteful number, since it uses less digits than its factorization.

320711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 320711 is about 566.3135174089. The cubic root of 320711 is about 68.4496584321.

Adding to 320711 its reverse (117023), we get a palindrome (437734).

The spelling of 320711 in words is "three hundred twenty thousand, seven hundred eleven", and thus it is an iban number.