331942 has 16 divisors (see below), whose sum is σ = 568512. Its totient is φ = 144000.

The previous prime is 331937. The next prime is 331943. The reversal of 331942 is 249133.

It is a super-2 number, since 2×331942² = 220370982728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331943) 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 in 7 ways as a sum of consecutive naturals, for example, 67 + ... + 817.

It is an arithmetic number, because the mean of its divisors is an integer number (35532).

2³³¹⁹⁴² is an apocalyptic number.

331942 is a deficient number, since it is larger than the sum of its proper divisors (236570).

331942 is a wasteful number, since it uses less digits than its factorization.

331942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its digits is 648, while the sum is 22.

The square root of 331942 is about 576.1440792024. The cubic root of 331942 is about 69.2395232362.

The spelling of 331942 in words is "three hundred thirty-one thousand, nine hundred forty-two".