331905241 has 2 divisors, whose sum is σ = 331905242. Its totient is φ = 331905240.

The previous prime is 331905227. The next prime is 331905247. The reversal of 331905241 is 142509133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210134016 + 121771225 = 14496^2 + 11035^2 .

It is a cyclic number.

It is not a de Polignac number, because 331905241 - 2⁷ = 331905113 is a prime.

It is a super-2 number, since 2×331905241² = 220322178006536162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331905247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165952620 + 165952621.

It is an arithmetic number, because the mean of its divisors is an integer number (165952621).

Almost surely, 2^331905241 is an apocalyptic number.

It is an amenable number.

331905241 is a deficient number, since it is larger than the sum of its proper divisors (1).

331905241 is an equidigital number, since it uses as much as digits as its factorization.

331905241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 331905241 is about 18218.2666848413. The cubic root of 331905241 is about 692.3696729811.

The spelling of 331905241 in words is "three hundred thirty-one million, nine hundred five thousand, two hundred forty-one".