331315433221242 has 8 divisors (see below), whose sum is σ = 662630866442496. Its totient is φ = 110438477740412.

The previous prime is 331315433221193. The next prime is 331315433221249. The reversal of 331315433221242 is 242122334513133.

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

331315433221242 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 331315433221242.

It is not an unprimeable number, because it can be changed into a prime (331315433221249) 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, 27609619435098 + ... + 27609619435109.

It is an arithmetic number, because the mean of its divisors is an integer number (82828858305312).

Almost surely, 2^{331315433221242} is an apocalyptic number.

331315433221242 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.

331315433221242 is a wasteful number, since it uses less digits than its factorization.

331315433221242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55219238870212.

The product of its digits is 311040, while the sum is 39.

Adding to 331315433221242 its reverse (242122334513133), we get a palindrome (573437767734375).

The spelling of 331315433221242 in words is "three hundred thirty-one trillion, three hundred fifteen billion, four hundred thirty-three million, two hundred twenty-one thousand, two hundred forty-two".