243401201171 has 2 divisors, whose sum is σ = 243401201172. Its totient is φ = 243401201170.

The previous prime is 243401201093. The next prime is 243401201227. The reversal of 243401201171 is 171102104342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243401201171 is a prime.

It is a super-2 number, since 2×243401201171² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243401201171.

It is not a weakly prime, because it can be changed into another prime (243401201471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121700600585 + 121700600586.

It is an arithmetic number, because the mean of its divisors is an integer number (121700600586).

Almost surely, 2^243401201171 is an apocalyptic number.

243401201171 is a deficient number, since it is larger than the sum of its proper divisors (1).

243401201171 is an equidigital number, since it uses as much as digits as its factorization.

243401201171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The spelling of 243401201171 in words is "two hundred forty-three billion, four hundred one million, two hundred one thousand, one hundred seventy-one".