331332231 has 8 divisors (see below), whose sum is σ = 441934720. Its totient is φ = 220808952.

The previous prime is 331332173. The next prime is 331332257. The reversal of 331332231 is 132233133.

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

It is not a de Polignac number, because 331332231 - 2⁷ = 331332103 is a prime.

It is a super-2 number, since 2×331332231² = 219562094598874722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331332198 and 331332207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331332271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9235 + ... + 27348.

It is an arithmetic number, because the mean of its divisors is an integer number (55241840).

Almost surely, 2^331332231 is an apocalyptic number.

331332231 is a deficient number, since it is larger than the sum of its proper divisors (110602489).

331332231 is a wasteful number, since it uses less digits than its factorization.

331332231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39605.

The product of its digits is 972, while the sum is 21.

The square root of 331332231 is about 18202.5336423257. The cubic root of 331332231 is about 691.9710016862.

Adding to 331332231 its reverse (132233133), we get a palindrome (463565364).

The spelling of 331332231 in words is "three hundred thirty-one million, three hundred thirty-two thousand, two hundred thirty-one".