243400010401 has 2 divisors, whose sum is σ = 243400010402. Its totient is φ = 243400010400.

The previous prime is 243400010369. The next prime is 243400010419. The reversal of 243400010401 is 104010004342.

243400010401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127663290000 + 115736720401 = 357300^2 + 340201^2 .

It is a cyclic number.

It is not a de Polignac number, because 243400010401 - 2⁵ = 243400010369 is a prime.

It is not a weakly prime, because it can be changed into another prime (243400017401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121700005200 + 121700005201.

It is an arithmetic number, because the mean of its divisors is an integer number (121700005201).

Almost surely, 2^243400010401 is an apocalyptic number.

It is an amenable number.

243400010401 is a deficient number, since it is larger than the sum of its proper divisors (1).

243400010401 is an equidigital number, since it uses as much as digits as its factorization.

243400010401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 243400010401 its reverse (104010004342), we get a palindrome (347410014743).

The spelling of 243400010401 in words is "two hundred forty-three billion, four hundred million, ten thousand, four hundred one".