331223047 has 2 divisors, whose sum is σ = 331223048. Its totient is φ = 331223046.

The previous prime is 331223041. The next prime is 331223059. The reversal of 331223047 is 740322133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331223047 - 2⁷ = 331222919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331223041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165611523 + 165611524.

It is an arithmetic number, because the mean of its divisors is an integer number (165611524).

Almost surely, 2^331223047 is an apocalyptic number.

331223047 is a deficient number, since it is larger than the sum of its proper divisors (1).

331223047 is an equidigital number, since it uses as much as digits as its factorization.

331223047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 331223047 is about 18199.5342522824. The cubic root of 331223047 is about 691.8949848716.

The spelling of 331223047 in words is "three hundred thirty-one million, two hundred twenty-three thousand, forty-seven".