201238715243 has 2 divisors, whose sum is σ = 201238715244. Its totient is φ = 201238715242.

The previous prime is 201238715239. The next prime is 201238715263. The reversal of 201238715243 is 342517832102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201238715243 - 2² = 201238715239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201238715197 and 201238715206.

It is not a weakly prime, because it can be changed into another prime (201238715263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100619357621 + 100619357622.

It is an arithmetic number, because the mean of its divisors is an integer number (100619357622).

Almost surely, 2^201238715243 is an apocalyptic number.

201238715243 is a deficient number, since it is larger than the sum of its proper divisors (1).

201238715243 is an equidigital number, since it uses as much as digits as its factorization.

201238715243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 201238715243 in words is "two hundred one billion, two hundred thirty-eight million, seven hundred fifteen thousand, two hundred forty-three".