331321133 has 16 divisors (see below), whose sum is σ = 389805696. Its totient is φ = 277631040.

The previous prime is 331321127. The next prime is 331321147. The reversal of 331321133 is 331123133.

It is a cyclic number.

It is not a de Polignac number, because 331321133 - 2⁴ = 331321117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331321103) 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 15 ways as a sum of consecutive naturals, for example, 139391 + ... + 141747.

It is an arithmetic number, because the mean of its divisors is an integer number (24362856).

Almost surely, 2^331321133 is an apocalyptic number.

It is an amenable number.

331321133 is a deficient number, since it is larger than the sum of its proper divisors (58484563).

331321133 is a wasteful number, since it uses less digits than its factorization.

331321133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3364.

The product of its digits is 486, while the sum is 20.

The square root of 331321133 is about 18202.2287921013. The cubic root of 331321133 is about 691.9632757249.

Adding to 331321133 its reverse (331123133), we get a palindrome (662444266).

The spelling of 331321133 in words is "three hundred thirty-one million, three hundred twenty-one thousand, one hundred thirty-three".