331131103220 has 24 divisors (see below), whose sum is σ = 707161341600. Its totient is φ = 130207484192.

The previous prime is 331131103217. The next prime is 331131103271. The reversal of 331131103220 is 22301131133.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 331131103192 and 331131103201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140308610 + ... + 140310969.

It is an arithmetic number, because the mean of its divisors is an integer number (29465055900).

Almost surely, 2^331131103220 is an apocalyptic number.

It is an amenable number.

331131103220 is an abundant number, since it is smaller than the sum of its proper divisors (376030238380).

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

331131103220 is a wasteful number, since it uses less digits than its factorization.

331131103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280619647 (or 280619645 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 331131103220 its reverse (22301131133), we get a palindrome (353432234353).

The spelling of 331131103220 in words is "three hundred thirty-one billion, one hundred thirty-one million, one hundred three thousand, two hundred twenty".