331224421 has 8 divisors (see below), whose sum is σ = 361663488. Its totient is φ = 300840000.

The previous prime is 331224419. The next prime is 331224431. The reversal of 331224421 is 124422133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331224421 - 2¹ = 331224419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331224392 and 331224401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331224431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420 + ... + 25741.

It is an arithmetic number, because the mean of its divisors is an integer number (45207936).

Almost surely, 2^331224421 is an apocalyptic number.

It is an amenable number.

331224421 is a deficient number, since it is larger than the sum of its proper divisors (30439067).

331224421 is a wasteful number, since it uses less digits than its factorization.

331224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27323.

The product of its digits is 1152, while the sum is 22.

The square root of 331224421 is about 18199.5720004620. The cubic root of 331224421 is about 691.8959415908.

Adding to 331224421 its reverse (124422133), we get a palindrome (455646554).

The spelling of 331224421 in words is "three hundred thirty-one million, two hundred twenty-four thousand, four hundred twenty-one".