331223224 has 8 divisors (see below), whose sum is σ = 621043560. Its totient is φ = 165611608.

The previous prime is 331223209. The next prime is 331223237. The reversal of 331223224 is 422322133.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 331223195 and 331223204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20701444 + ... + 20701459.

It is an arithmetic number, because the mean of its divisors is an integer number (77630445).

Almost surely, 2^331223224 is an apocalyptic number.

It is an amenable number.

331223224 is a deficient number, since it is larger than the sum of its proper divisors (289820336).

331223224 is a wasteful number, since it uses less digits than its factorization.

331223224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41402909 (or 41402905 counting only the distinct ones).

The product of its digits is 1728, while the sum is 22.

The square root of 331223224 is about 18199.5391150435. The cubic root of 331223224 is about 691.8951081172.

Adding to 331223224 its reverse (422322133), we get a palindrome (753545357).

The spelling of 331223224 in words is "three hundred thirty-one million, two hundred twenty-three thousand, two hundred twenty-four".