331412220 has 72 divisors (see below), whose sum is σ = 1006780320. Its totient is φ = 88245120.

The previous prime is 331412201. The next prime is 331412281. The reversal of 331412220 is 22214133.

331412220 is a `hidden beast` number, since 3 + 31 + 412 + 220 = 666.

331412220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 331412193 and 331412202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211801 + ... + 213359.

It is an arithmetic number, because the mean of its divisors is an integer number (13983060).

Almost surely, 2^331412220 is an apocalyptic number.

331412220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331412220 is an abundant number, since it is smaller than the sum of its proper divisors (675368100).

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

331412220 is a wasteful number, since it uses less digits than its factorization.

331412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2750 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 331412220 is about 18204.7307038583. The cubic root of 331412220 is about 692.0266815645.

Adding to 331412220 its reverse (22214133), we get a palindrome (353626353).

The spelling of 331412220 in words is "three hundred thirty-one million, four hundred twelve thousand, two hundred twenty".