331342144 has 28 divisors (see below), whose sum is σ = 751437664. Its totient is φ = 142003584.

The previous prime is 331342127. The next prime is 331342147. The reversal of 331342144 is 441243133.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331342147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369354 + ... + 370249.

Almost surely, 2^331342144 is an apocalyptic number.

It is an amenable number.

331342144 is an abundant number, since it is smaller than the sum of its proper divisors (420095520).

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

331342144 is an equidigital number, since it uses as much as digits as its factorization.

331342144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739622 (or 739612 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 331342144 is about 18202.8059375471. The cubic root of 331342144 is about 691.9779025543.

Adding to 331342144 its reverse (441243133), we get a palindrome (772585277).

The spelling of 331342144 in words is "three hundred thirty-one million, three hundred forty-two thousand, one hundred forty-four".