311343 has 8 divisors (see below), whose sum is σ = 422400. Its totient is φ = 203928.

The previous prime is 311341. The next prime is 311347. The reversal of 311343 is 343113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311343 - 2¹ = 311341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (52800).

2³¹¹³⁴³ is an apocalyptic number.

311343 is a deficient number, since it is larger than the sum of its proper divisors (111057).

311343 is a wasteful number, since it uses less digits than its factorization.

311343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821.

The product of its digits is 108, while the sum is 15.

The square root of 311343 is about 557.9811824784. The cubic root of 311343 is about 67.7765880130.

Adding to 311343 its reverse (343113), we get a palindrome (654456).

The spelling of 311343 in words is "three hundred eleven thousand, three hundred forty-three", and thus it is an iban number.