243730353133 has 2 divisors, whose sum is σ = 243730353134. Its totient is φ = 243730353132.

The previous prime is 243730353107. The next prime is 243730353161. The reversal of 243730353133 is 331353037342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236737714249 + 6992638884 = 486557^2 + 83622^2 .

It is a cyclic number.

It is not a de Polignac number, because 243730353133 - 2⁵ = 243730353101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243730353092 and 243730353101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243730353193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121865176566 + 121865176567.

It is an arithmetic number, because the mean of its divisors is an integer number (121865176567).

Almost surely, 2^243730353133 is an apocalyptic number.

It is an amenable number.

243730353133 is a deficient number, since it is larger than the sum of its proper divisors (1).

243730353133 is an equidigital number, since it uses as much as digits as its factorization.

243730353133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 37.

The spelling of 243730353133 in words is "two hundred forty-three billion, seven hundred thirty million, three hundred fifty-three thousand, one hundred thirty-three".