331440342 has 8 divisors (see below), whose sum is σ = 662880696. Its totient is φ = 110480112.

The previous prime is 331440337. The next prime is 331440359. The reversal of 331440342 is 243044133.

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

331440342 is an admirable number.

It is a congruent 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, 27620023 + ... + 27620034.

It is an arithmetic number, because the mean of its divisors is an integer number (82860087).

Almost surely, 2^331440342 is an apocalyptic number.

331440342 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.

331440342 is a wasteful number, since it uses less digits than its factorization.

331440342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55240062.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 331440342 is about 18205.5030691272. The cubic root of 331440342 is about 692.0462549967.

Adding to 331440342 its reverse (243044133), we get a palindrome (574484475).

The spelling of 331440342 in words is "three hundred thirty-one million, four hundred forty thousand, three hundred forty-two".