331118033 has 2 divisors, whose sum is σ = 331118034. Its totient is φ = 331118032.

The previous prime is 331117981. The next prime is 331118041. The reversal of 331118033 is 330811133.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224760064 + 106357969 = 14992^2 + 10313^2 .

It is a cyclic number.

It is not a de Polignac number, because 331118033 - 2¹⁶ = 331052497 is a prime.

It is not a weakly prime, because it can be changed into another prime (331118093) 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, 165559016 + 165559017.

It is an arithmetic number, because the mean of its divisors is an integer number (165559017).

Almost surely, 2^331118033 is an apocalyptic number.

It is an amenable number.

331118033 is a deficient number, since it is larger than the sum of its proper divisors (1).

331118033 is an equidigital number, since it uses as much as digits as its factorization.

331118033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 331118033 is about 18196.6489497380. The cubic root of 331118033 is about 691.8218555602.

Adding to 331118033 its reverse (330811133), we get a palindrome (661929166).

The spelling of 331118033 in words is "three hundred thirty-one million, one hundred eighteen thousand, thirty-three".