331121355818 has 8 divisors (see below), whose sum is σ = 541834945920. Its totient is φ = 150509707180.

The previous prime is 331121355797. The next prime is 331121355827. The reversal of 331121355818 is 818553121133.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7525485338 + ... + 7525485381.

It is an arithmetic number, because the mean of its divisors is an integer number (67729368240).

Almost surely, 2^331121355818 is an apocalyptic number.

331121355818 is a deficient number, since it is larger than the sum of its proper divisors (210713590102).

331121355818 is a wasteful number, since it uses less digits than its factorization.

331121355818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15050970732.

The product of its digits is 86400, while the sum is 41.

The spelling of 331121355818 in words is "three hundred thirty-one billion, one hundred twenty-one million, three hundred fifty-five thousand, eight hundred eighteen".