243424414397 has 2 divisors, whose sum is σ = 243424414398. Its totient is φ = 243424414396.

The previous prime is 243424414351. The next prime is 243424414411. The reversal of 243424414397 is 793414424342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240545126116 + 2879288281 = 490454^2 + 53659^2 .

It is a cyclic number.

It is not a de Polignac number, because 243424414397 - 2⁶ = 243424414333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243424414097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121712207198 + 121712207199.

It is an arithmetic number, because the mean of its divisors is an integer number (121712207199).

Almost surely, 2^243424414397 is an apocalyptic number.

It is an amenable number.

243424414397 is a deficient number, since it is larger than the sum of its proper divisors (1).

243424414397 is an equidigital number, since it uses as much as digits as its factorization.

243424414397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 47.

The spelling of 243424414397 in words is "two hundred forty-three billion, four hundred twenty-four million, four hundred fourteen thousand, three hundred ninety-seven".