331042440252 has 12 divisors (see below), whose sum is σ = 772432360616. Its totient is φ = 110347480080.

The previous prime is 331042440233. The next prime is 331042440343. The reversal of 331042440252 is 252044240133.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13793434999 + ... + 13793435022.

Almost surely, 2^331042440252 is an apocalyptic number.

It is an amenable number.

331042440252 is an abundant number, since it is smaller than the sum of its proper divisors (441389920364).

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

331042440252 is a wasteful number, since it uses less digits than its factorization.

331042440252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27586870028 (or 27586870026 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 331042440252 its reverse (252044240133), we get a palindrome (583086680385).

The spelling of 331042440252 in words is "three hundred thirty-one billion, forty-two million, four hundred forty thousand, two hundred fifty-two".