331830241 has 2 divisors, whose sum is σ = 331830242. Its totient is φ = 331830240.

The previous prime is 331830203. The next prime is 331830251. The reversal of 331830241 is 142038133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328370641 + 3459600 = 18121^2 + 1860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331830241 is a prime.

It is a super-2 number, since 2×331830241² = 220222617684236162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331830251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165915120 + 165915121.

It is an arithmetic number, because the mean of its divisors is an integer number (165915121).

Almost surely, 2^331830241 is an apocalyptic number.

It is an amenable number.

331830241 is a deficient number, since it is larger than the sum of its proper divisors (1).

331830241 is an equidigital number, since it uses as much as digits as its factorization.

331830241 is an evil number, because the sum of its binary digits is even.

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

The square root of 331830241 is about 18216.2081949016. The cubic root of 331830241 is about 692.3175178970.

Adding to 331830241 its reverse (142038133), we get a palindrome (473868374).

The spelling of 331830241 in words is "three hundred thirty-one million, eight hundred thirty thousand, two hundred forty-one".