331243193 has 2 divisors, whose sum is σ = 331243194. Its totient is φ = 331243192.

The previous prime is 331243183. The next prime is 331243271. The reversal of 331243193 is 391342133.

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., 325874704 + 5368489 = 18052^2 + 2317^2 .

It is a cyclic number.

It is not a de Polignac number, because 331243193 - 2¹⁰ = 331242169 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331243183) 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, 165621596 + 165621597.

It is an arithmetic number, because the mean of its divisors is an integer number (165621597).

Almost surely, 2^331243193 is an apocalyptic number.

It is an amenable number.

331243193 is a deficient number, since it is larger than the sum of its proper divisors (1).

331243193 is an equidigital number, since it uses as much as digits as its factorization.

331243193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 29.

The square root of 331243193 is about 18200.0877195688. The cubic root of 331243193 is about 691.9090123111.

The spelling of 331243193 in words is "three hundred thirty-one million, two hundred forty-three thousand, one hundred ninety-three".