331018389252 has 144 divisors (see below), whose sum is σ = 894887046144. Its totient is φ = 102807936000.

The previous prime is 331018389227. The next prime is 331018389271. The reversal of 331018389252 is 252983810133.

331018389252 is a `hidden beast` number, since 3 + 3 + 1 + 0 + 18 + 389 + 252 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 331018389198 and 331018389207.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 24657502 + ... + 24670922.

It is an arithmetic number, because the mean of its divisors is an integer number (6214493376).

Almost surely, 2^331018389252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331018389252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447443523072).

331018389252 is an abundant number, since it is smaller than the sum of its proper divisors (563868656892).

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

331018389252 is a wasteful number, since it uses less digits than its factorization.

331018389252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13850 (or 13845 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 331018389252 in words is "three hundred thirty-one billion, eighteen million, three hundred eighty-nine thousand, two hundred fifty-two".