243436154201 has 2 divisors, whose sum is σ = 243436154202. Its totient is φ = 243436154200.

The previous prime is 243436154197. The next prime is 243436154231. The reversal of 243436154201 is 102451634342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241253862976 + 2182291225 = 491176^2 + 46715^2 .

It is a cyclic number.

It is not a de Polignac number, because 243436154201 - 2² = 243436154197 is a prime.

It is a super-2 number, since 2×243436154201² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243436154231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121718077100 + 121718077101.

It is an arithmetic number, because the mean of its divisors is an integer number (121718077101).

Almost surely, 2^243436154201 is an apocalyptic number.

It is an amenable number.

243436154201 is a deficient number, since it is larger than the sum of its proper divisors (1).

243436154201 is an equidigital number, since it uses as much as digits as its factorization.

243436154201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 243436154201 its reverse (102451634342), we get a palindrome (345887788543).

The spelling of 243436154201 in words is "two hundred forty-three billion, four hundred thirty-six million, one hundred fifty-four thousand, two hundred one".