331013297 has 2 divisors, whose sum is σ = 331013298. Its totient is φ = 331013296.

The previous prime is 331013281. The next prime is 331013311. The reversal of 331013297 is 792310133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243328801 + 87684496 = 15599^2 + 9364^2 .

It is an emirp because it is prime and its reverse (792310133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331013297 - 2⁴ = 331013281 is a prime.

It is not a weakly prime, because it can be changed into another prime (331013227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165506648 + 165506649.

It is an arithmetic number, because the mean of its divisors is an integer number (165506649).

Almost surely, 2^331013297 is an apocalyptic number.

It is an amenable number.

331013297 is a deficient number, since it is larger than the sum of its proper divisors (1).

331013297 is an equidigital number, since it uses as much as digits as its factorization.

331013297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 331013297 is about 18193.7708295999. The cubic root of 331013297 is about 691.7489044392.

The spelling of 331013297 in words is "three hundred thirty-one million, thirteen thousand, two hundred ninety-seven".