331286442 has 8 divisors (see below), whose sum is σ = 662572896. Its totient is φ = 110428812.

The previous prime is 331286441. The next prime is 331286443. The reversal of 331286442 is 244682133.

It is an interprime number because it is at equal distance from previous prime (331286441) and next prime (331286443).

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

331286442 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (331286441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27607198 + ... + 27607209.

It is an arithmetic number, because the mean of its divisors is an integer number (82821612).

Almost surely, 2^331286442 is an apocalyptic number.

331286442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

331286442 is a wasteful number, since it uses less digits than its factorization.

331286442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55214412.

The product of its digits is 27648, while the sum is 33.

The square root of 331286442 is about 18201.2758344024. The cubic root of 331286442 is about 691.9391241959.

The spelling of 331286442 in words is "three hundred thirty-one million, two hundred eighty-six thousand, four hundred forty-two".