331315121031040 has 32 divisors (see below), whose sum is σ = 792050211216360. Its totient is φ = 132526048412160.

The previous prime is 331315121030989. The next prime is 331315121031049. The reversal of 331315121031040 is 40130121513133.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331315121031049) 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, 258839937666 + ... + 258839938945.

Almost surely, 2^{331315121031040} is an apocalyptic number.

It is an amenable number.

331315121031040 is an abundant number, since it is smaller than the sum of its proper divisors (460735090185320).

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

331315121031040 is an equidigital number, since it uses as much as digits as its factorization.

331315121031040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517679876630 (or 517679876618 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 331315121031040 its reverse (40130121513133), we get a palindrome (371445242544173).

The spelling of 331315121031040 in words is "three hundred thirty-one trillion, three hundred fifteen billion, one hundred twenty-one million, thirty-one thousand, forty".