331481243 has 2 divisors, whose sum is σ = 331481244. Its totient is φ = 331481242.

The previous prime is 331481237. The next prime is 331481257. The reversal of 331481243 is 342184133.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331481243 - 2⁸ = 331480987 is a prime.

It is not a weakly prime, because it can be changed into another prime (331481203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165740621 + 165740622.

It is an arithmetic number, because the mean of its divisors is an integer number (165740622).

Almost surely, 2^331481243 is an apocalyptic number.

331481243 is a deficient number, since it is larger than the sum of its proper divisors (1).

331481243 is an equidigital number, since it uses as much as digits as its factorization.

331481243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 331481243 is about 18206.6263486677. The cubic root of 331481243 is about 692.0747208733.

The spelling of 331481243 in words is "three hundred thirty-one million, four hundred eighty-one thousand, two hundred forty-three".