243461253603313 has 2 divisors, whose sum is σ = 243461253603314. Its totient is φ = 243461253603312.

The previous prime is 243461253603299. The next prime is 243461253603353. The reversal of 243461253603313 is 313306352164342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179189493724224 + 64271759879089 = 13386168^2 + 8016967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243461253603313 is a prime.

It is not a weakly prime, because it can be changed into another prime (243461253603353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121730626801656 + 121730626801657.

It is an arithmetic number, because the mean of its divisors is an integer number (121730626801657).

Almost surely, 2^{243461253603313} is an apocalyptic number.

It is an amenable number.

243461253603313 is a deficient number, since it is larger than the sum of its proper divisors (1).

243461253603313 is an equidigital number, since it uses as much as digits as its factorization.

243461253603313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 46.

The spelling of 243461253603313 in words is "two hundred forty-three trillion, four hundred sixty-one billion, two hundred fifty-three million, six hundred three thousand, three hundred thirteen".