310842 has 24 divisors (see below), whose sum is σ = 770016. Its totient is φ = 88776.

The previous prime is 310831. The next prime is 310861. The reversal of 310842 is 248013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

310842 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1108 + ... + 1359.

It is an arithmetic number, because the mean of its divisors is an integer number (32084).

2³¹⁰⁸⁴² is an apocalyptic number.

310842 is an abundant number, since it is smaller than the sum of its proper divisors (459174).

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

310842 is a wasteful number, since it uses less digits than its factorization.

310842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482 (or 2479 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 310842 is about 557.5320618583. The cubic root of 310842 is about 67.7402140884.

Adding to 310842 its reverse (248013), we get a palindrome (558855).

The spelling of 310842 in words is "three hundred ten thousand, eight hundred forty-two".