243000310100213 has 2 divisors, whose sum is σ = 243000310100214. Its totient is φ = 243000310100212.

The previous prime is 243000310100117. The next prime is 243000310100221. The reversal of 243000310100213 is 312001013000342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186829587147844 + 56170722952369 = 13668562^2 + 7494713^2 .

It is a cyclic number.

It is not a de Polignac number, because 243000310100213 - 2²² = 243000305905909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243000310100813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121500155050106 + 121500155050107.

It is an arithmetic number, because the mean of its divisors is an integer number (121500155050107).

Almost surely, 2^{243000310100213} is an apocalyptic number.

It is an amenable number.

243000310100213 is a deficient number, since it is larger than the sum of its proper divisors (1).

243000310100213 is an equidigital number, since it uses as much as digits as its factorization.

243000310100213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 243000310100213 its reverse (312001013000342), we get a palindrome (555001323100555).

The spelling of 243000310100213 in words is "two hundred forty-three trillion, three hundred ten million, one hundred thousand, two hundred thirteen".