331331222 has 4 divisors (see below), whose sum is σ = 496996836. Its totient is φ = 165665610.

The previous prime is 331331213. The next prime is 331331251. The reversal of 331331222 is 222133133.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 331331194 and 331331203.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 82832804 + ... + 82832807.

It is an arithmetic number, because the mean of its divisors is an integer number (124249209).

Almost surely, 2^331331222 is an apocalyptic number.

331331222 is a deficient number, since it is larger than the sum of its proper divisors (165665614).

331331222 is a wasteful number, since it uses less digits than its factorization.

331331222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165665613.

The product of its digits is 648, while the sum is 20.

The square root of 331331222 is about 18202.5059263828. The cubic root of 331331222 is about 691.9702992699.

Adding to 331331222 its reverse (222133133), we get a palindrome (553464355).

The spelling of 331331222 in words is "three hundred thirty-one million, three hundred thirty-one thousand, two hundred twenty-two".