311342 has 4 divisors (see below), whose sum is σ = 467016. Its totient is φ = 155670.

The previous prime is 311341. The next prime is 311347. The reversal of 311342 is 243113.

311342 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 243113 = 13 ⋅18701.

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77834 + ... + 77837.

It is an arithmetic number, because the mean of its divisors is an integer number (116754).

2³¹¹³⁴² is an apocalyptic number.

311342 is a deficient number, since it is larger than the sum of its proper divisors (155674).

311342 is a wasteful number, since it uses less digits than its factorization.

311342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155673.

The product of its digits is 72, while the sum is 14.

The square root of 311342 is about 557.9802863901. The cubic root of 311342 is about 67.7765154492.

Adding to 311342 its reverse (243113), we get a palindrome (554455).

The spelling of 311342 in words is "three hundred eleven thousand, three hundred forty-two", and thus it is an iban number.