331222240 has 48 divisors (see below), whose sum is σ = 784446768. Its totient is φ = 132161536.

The previous prime is 331222189. The next prime is 331222267. The reversal of 331222240 is 42222133.

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, 68544 + ... + 73216.

It is an arithmetic number, because the mean of its divisors is an integer number (16342641).

Almost surely, 2^331222240 is an apocalyptic number.

It is an amenable number.

331222240 is an abundant number, since it is smaller than the sum of its proper divisors (453224528).

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

331222240 is a wasteful number, since it uses less digits than its factorization.

331222240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 331222240 is about 18199.5120813719. The cubic root of 331222240 is about 691.8944229545.

Adding to 331222240 its reverse (42222133), we get a palindrome (373444373).

It can be divided in two parts, 3312 and 22240, that added together give a palindrome (25552).

The spelling of 331222240 in words is "three hundred thirty-one million, two hundred twenty-two thousand, two hundred forty".