331344133 has 2 divisors, whose sum is σ = 331344134. Its totient is φ = 331344132.

The previous prime is 331344121. The next prime is 331344163. The reversal of 331344133 is 331443133.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331312804 + 31329 = 18202^2 + 177^2 .

It is a cyclic number.

It is not a de Polignac number, because 331344133 - 2¹⁷ = 331213061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331344098 and 331344107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331344163) 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 as a sum of consecutive naturals, namely, 165672066 + 165672067.

It is an arithmetic number, because the mean of its divisors is an integer number (165672067).

Almost surely, 2^331344133 is an apocalyptic number.

It is an amenable number.

331344133 is a deficient number, since it is larger than the sum of its proper divisors (1).

331344133 is an equidigital number, since it uses as much as digits as its factorization.

331344133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 25.

The square root of 331344133 is about 18202.8605718991. The cubic root of 331344133 is about 691.9792871667.

Adding to 331344133 its reverse (331443133), we get a palindrome (662787266).

The spelling of 331344133 in words is "three hundred thirty-one million, three hundred forty-four thousand, one hundred thirty-three".