331140041 has 2 divisors, whose sum is σ = 331140042. Its totient is φ = 331140040.

The previous prime is 331140031. The next prime is 331140053. The reversal of 331140041 is 140041133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324144016 + 6996025 = 18004^2 + 2645^2 .

It is an emirp because it is prime and its reverse (140041133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331140041 - 2²² = 326945737 is a prime.

It is not a weakly prime, because it can be changed into another prime (331140001) 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, 165570020 + 165570021.

It is an arithmetic number, because the mean of its divisors is an integer number (165570021).

Almost surely, 2^331140041 is an apocalyptic number.

It is an amenable number.

331140041 is a deficient number, since it is larger than the sum of its proper divisors (1).

331140041 is an equidigital number, since it uses as much as digits as its factorization.

331140041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 331140041 is about 18197.2536664190. The cubic root of 331140041 is about 691.8371827009.

Adding to 331140041 its reverse (140041133), we get a palindrome (471181174).

The spelling of 331140041 in words is "three hundred thirty-one million, one hundred forty thousand, forty-one".