242311043231 has 2 divisors, whose sum is σ = 242311043232. Its totient is φ = 242311043230.

The previous prime is 242311043213. The next prime is 242311043239. The reversal of 242311043231 is 132340113242.

Together with previous prime (242311043213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242311043231 is a prime.

It is a super-2 number, since 2×242311043231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242311043231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242311043239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121155521615 + 121155521616.

It is an arithmetic number, because the mean of its divisors is an integer number (121155521616).

Almost surely, 2^242311043231 is an apocalyptic number.

242311043231 is a deficient number, since it is larger than the sum of its proper divisors (1).

242311043231 is an equidigital number, since it uses as much as digits as its factorization.

242311043231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 242311043231 its reverse (132340113242), we get a palindrome (374651156473).

The spelling of 242311043231 in words is "two hundred forty-two billion, three hundred eleven million, forty-three thousand, two hundred thirty-one".