331214641 has 2 divisors, whose sum is σ = 331214642. Its totient is φ = 331214640.

The previous prime is 331214599. The next prime is 331214647. The reversal of 331214641 is 146412133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207360000 + 123854641 = 14400^2 + 11129^2 .

It is a cyclic number.

It is not a de Polignac number, because 331214641 - 2⁹ = 331214129 is a prime.

It is not a weakly prime, because it can be changed into another prime (331214647) 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, 165607320 + 165607321.

It is an arithmetic number, because the mean of its divisors is an integer number (165607321).

Almost surely, 2^331214641 is an apocalyptic number.

It is an amenable number.

331214641 is a deficient number, since it is larger than the sum of its proper divisors (1).

331214641 is an equidigital number, since it uses as much as digits as its factorization.

331214641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 331214641 is about 18199.3033108413. The cubic root of 331214641 is about 691.8891316975.

Adding to 331214641 its reverse (146412133), we get a palindrome (477626774).

The spelling of 331214641 in words is "three hundred thirty-one million, two hundred fourteen thousand, six hundred forty-one".