331285049 has 2 divisors, whose sum is σ = 331285050. Its totient is φ = 331285048.

The previous prime is 331285039. The next prime is 331285061. The reversal of 331285049 is 940582133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295668025 + 35617024 = 17195^2 + 5968^2 .

It is a cyclic number.

It is not a de Polignac number, because 331285049 - 2¹² = 331280953 is a prime.

It is not a weakly prime, because it can be changed into another prime (331285039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165642524 + 165642525.

It is an arithmetic number, because the mean of its divisors is an integer number (165642525).

Almost surely, 2^331285049 is an apocalyptic number.

It is an amenable number.

331285049 is a deficient number, since it is larger than the sum of its proper divisors (1).

331285049 is an equidigital number, since it uses as much as digits as its factorization.

331285049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 331285049 is about 18201.2375678139. The cubic root of 331285049 is about 691.9381543680.

The spelling of 331285049 in words is "three hundred thirty-one million, two hundred eighty-five thousand, forty-nine".