242441531 has 2 divisors, whose sum is σ = 242441532. Its totient is φ = 242441530.

The previous prime is 242441489. The next prime is 242441533. The reversal of 242441531 is 135144242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242441531 - 2⁶ = 242441467 is a prime.

It is a super-2 number, since 2×242441531² = 117555791907247922, which contains 22 as substring.

Together with 242441533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242441531.

It is not a weakly prime, because it can be changed into another prime (242441533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121220765 + 121220766.

It is an arithmetic number, because the mean of its divisors is an integer number (121220766).

Almost surely, 2^242441531 is an apocalyptic number.

242441531 is a deficient number, since it is larger than the sum of its proper divisors (1).

242441531 is an equidigital number, since it uses as much as digits as its factorization.

242441531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 26.

The square root of 242441531 is about 15570.5340627738. The cubic root of 242441531 is about 623.5467298820.

Adding to 242441531 its reverse (135144242), we get a palindrome (377585773).

The spelling of 242441531 in words is "two hundred forty-two million, four hundred forty-one thousand, five hundred thirty-one".