243241032497 has 2 divisors, whose sum is σ = 243241032498. Its totient is φ = 243241032496.

The previous prime is 243241032421. The next prime is 243241032509. The reversal of 243241032497 is 794230142342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241517205136 + 1723827361 = 491444^2 + 41519^2 .

It is a cyclic number.

It is not a de Polignac number, because 243241032497 - 2¹⁴ = 243241016113 is a prime.

It is a super-2 number, since 2×243241032497² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243241034497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121620516248 + 121620516249.

It is an arithmetic number, because the mean of its divisors is an integer number (121620516249).

Almost surely, 2^243241032497 is an apocalyptic number.

It is an amenable number.

243241032497 is a deficient number, since it is larger than the sum of its proper divisors (1).

243241032497 is an equidigital number, since it uses as much as digits as its factorization.

243241032497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 243241032497 in words is "two hundred forty-three billion, two hundred forty-one million, thirty-two thousand, four hundred ninety-seven".