331444220140 has 48 divisors (see below), whose sum is σ = 760306738464. Its totient is φ = 120366732800.

The previous prime is 331444220119. The next prime is 331444220167. The reversal of 331444220140 is 41022444133.

It is a junction number, because it is equal to n+sod(n) for n = 331444220099 and 331444220108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822439 + ... + 1157278.

It is an arithmetic number, because the mean of its divisors is an integer number (15839723718).

Almost surely, 2^331444220140 is an apocalyptic number.

It is an amenable number.

331444220140 is an abundant number, since it is smaller than the sum of its proper divisors (428862518324).

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

331444220140 is a wasteful number, since it uses less digits than its factorization.

331444220140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980498 (or 1980496 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 331444220140 its reverse (41022444133), we get a palindrome (372466664273).

The spelling of 331444220140 in words is "three hundred thirty-one billion, four hundred forty-four million, two hundred twenty thousand, one hundred forty".