331121442 has 8 divisors (see below), whose sum is σ = 662242896. Its totient is φ = 110373812.

The previous prime is 331121419. The next prime is 331121467. The reversal of 331121442 is 244121133.

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

331121442 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27593448 + ... + 27593459.

It is an arithmetic number, because the mean of its divisors is an integer number (82780362).

Almost surely, 2^331121442 is an apocalyptic number.

331121442 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.

331121442 is a wasteful number, since it uses less digits than its factorization.

331121442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55186912.

The product of its digits is 576, while the sum is 21.

The square root of 331121442 is about 18196.7426205901. The cubic root of 331121442 is about 691.8242297514.

Adding to 331121442 its reverse (244121133), we get a palindrome (575242575).

It can be divided in two parts, 3311 and 21442, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 331121442 in words is "three hundred thirty-one million, one hundred twenty-one thousand, four hundred forty-two".