311420 has 24 divisors (see below), whose sum is σ = 683424. Its totient is φ = 118976.

The previous prime is 311419. The next prime is 311447. The reversal of 311420 is 24113.

It is a happy number.

311420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122 + ... + 798.

It is an arithmetic number, because the mean of its divisors is an integer number (28476).

2³¹¹⁴²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341712).

311420 is an abundant number, since it is smaller than the sum of its proper divisors (372004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311420 is a wasteful number, since it uses less digits than its factorization.

311420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 311420 is about 558.0501769554. The cubic root of 311420 is about 67.7821749563.

Adding to 311420 its reverse (24113), we get a palindrome (335533).

The spelling of 311420 in words is "three hundred eleven thousand, four hundred twenty", and thus it is an iban number.