331222231 has 8 divisors (see below), whose sum is σ = 357159600. Its totient is φ = 306135360.

The previous prime is 331222189. The next prime is 331222267. The reversal of 331222231 is 132222133.

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 331222231 - 2⁹ = 331221719 is a prime.

It is a super-2 number, since 2×331222231² = 219416332617234722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331222199 and 331222208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331229231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211816 + ... + 213373.

It is an arithmetic number, because the mean of its divisors is an integer number (44644950).

Almost surely, 2^331222231 is an apocalyptic number.

331222231 is a deficient number, since it is larger than the sum of its proper divisors (25937369).

331222231 is a wasteful number, since it uses less digits than its factorization.

331222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425249.

The product of its digits is 432, while the sum is 19.

The square root of 331222231 is about 18199.5118341125. The cubic root of 331222231 is about 691.8944166877.

Adding to 331222231 its reverse (132222133), we get a palindrome (463444364).

It can be divided in two parts, 33122 and 2231, that added together give a palindrome (35353).

The spelling of 331222231 in words is "three hundred thirty-one million, two hundred twenty-two thousand, two hundred thirty-one".