243016375355231 has 2 divisors, whose sum is σ = 243016375355232. Its totient is φ = 243016375355230.

The previous prime is 243016375355167. The next prime is 243016375355321. The reversal of 243016375355231 is 132553573610342.

Together with next prime (243016375355321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243016375355231 - 2⁶ = 243016375355167 is a prime.

It is a super-2 number, since 2×243016375355231² (a number of 30 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 243016375355231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243016375325231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121508187677615 + 121508187677616.

It is an arithmetic number, because the mean of its divisors is an integer number (121508187677616).

Almost surely, 2^{243016375355231} is an apocalyptic number.

243016375355231 is a deficient number, since it is larger than the sum of its proper divisors (1).

243016375355231 is an equidigital number, since it uses as much as digits as its factorization.

243016375355231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804000, while the sum is 50.

The spelling of 243016375355231 in words is "two hundred forty-three trillion, sixteen billion, three hundred seventy-five million, three hundred fifty-five thousand, two hundred thirty-one".