243203250461 has 2 divisors, whose sum is σ = 243203250462. Its totient is φ = 243203250460.

The previous prime is 243203250443. The next prime is 243203250467. The reversal of 243203250461 is 164052302342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193407327961 + 49795922500 = 439781^2 + 223150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243203250461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243203250467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121601625230 + 121601625231.

It is an arithmetic number, because the mean of its divisors is an integer number (121601625231).

Almost surely, 2^243203250461 is an apocalyptic number.

It is an amenable number.

243203250461 is a deficient number, since it is larger than the sum of its proper divisors (1).

243203250461 is an equidigital number, since it uses as much as digits as its factorization.

243203250461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 243203250461 in words is "two hundred forty-three billion, two hundred three million, two hundred fifty thousand, four hundred sixty-one".