331345141 has 2 divisors, whose sum is σ = 331345142. Its totient is φ = 331345140.

The previous prime is 331345139. The next prime is 331345151. The reversal of 331345141 is 141543133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281232900 + 50112241 = 16770^2 + 7079^2 .

It is an emirp because it is prime and its reverse (141543133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331345141 - 2¹ = 331345139 is a prime.

Together with 331345139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331345111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165672570 + 165672571.

It is an arithmetic number, because the mean of its divisors is an integer number (165672571).

Almost surely, 2^331345141 is an apocalyptic number.

It is an amenable number.

331345141 is a deficient number, since it is larger than the sum of its proper divisors (1).

331345141 is an equidigital number, since it uses as much as digits as its factorization.

331345141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 331345141 is about 18202.8882598339. Note that the first 3 decimals coincide. The cubic root of 331345141 is about 691.9799888686.

Adding to 331345141 its reverse (141543133), we get a palindrome (472888274).

The spelling of 331345141 in words is "three hundred thirty-one million, three hundred forty-five thousand, one hundred forty-one".