311942 has 8 divisors (see below), whose sum is σ = 492600. Its totient is φ = 147744.

The previous prime is 311897. The next prime is 311951. The reversal of 311942 is 249113.

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

It is a super-2 number, since 2×311942² = 194615622728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4067 + ... + 4142.

It is an arithmetic number, because the mean of its divisors is an integer number (61575).

2³¹¹⁹⁴² is an apocalyptic number.

311942 is a deficient number, since it is larger than the sum of its proper divisors (180658).

311942 is a wasteful number, since it uses less digits than its factorization.

311942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8230.

The product of its digits is 216, while the sum is 20.

The square root of 311942 is about 558.5176810093. The cubic root of 311942 is about 67.8200258164.

The spelling of 311942 in words is "three hundred eleven thousand, nine hundred forty-two".