331321117 has 2 divisors, whose sum is σ = 331321118. Its totient is φ = 331321116.

The previous prime is 331321103. The next prime is 331321121. The reversal of 331321117 is 711123133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325225156 + 6095961 = 18034^2 + 2469^2 .

It is a cyclic number.

It is not a de Polignac number, because 331321117 - 2⁷ = 331320989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331321127) 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 as a sum of consecutive naturals, namely, 165660558 + 165660559.

It is an arithmetic number, because the mean of its divisors is an integer number (165660559).

Almost surely, 2^331321117 is an apocalyptic number.

It is an amenable number.

331321117 is a deficient number, since it is larger than the sum of its proper divisors (1).

331321117 is an equidigital number, since it uses as much as digits as its factorization.

331321117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 22.

The square root of 331321117 is about 18202.2283525946. The cubic root of 331321117 is about 691.9632645863.

The spelling of 331321117 in words is "three hundred thirty-one million, three hundred twenty-one thousand, one hundred seventeen".