241510981 has 2 divisors, whose sum is σ = 241510982. Its totient is φ = 241510980.

The previous prime is 241510961. The next prime is 241511041. The reversal of 241510981 is 189015142.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225270081 + 16240900 = 15009^2 + 4030^2 .

It is a cyclic number.

It is not a de Polignac number, because 241510981 - 2⁷ = 241510853 is a prime.

It is a super-2 number, since 2×241510981² = 116655107887164722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241510931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120755490 + 120755491.

It is an arithmetic number, because the mean of its divisors is an integer number (120755491).

Almost surely, 2^241510981 is an apocalyptic number.

It is an amenable number.

241510981 is a deficient number, since it is larger than the sum of its proper divisors (1).

241510981 is an equidigital number, since it uses as much as digits as its factorization.

241510981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 241510981 is about 15540.6235717876. The cubic root of 241510981 is about 622.7479319702.

The spelling of 241510981 in words is "two hundred forty-one million, five hundred ten thousand, nine hundred eighty-one".