163431241 has 2 divisors, whose sum is σ = 163431242. Its totient is φ = 163431240.

The previous prime is 163431227. The next prime is 163431259. The reversal of 163431241 is 142134361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154256400 + 9174841 = 12420^2 + 3029^2 .

It is an emirp because it is prime and its reverse (142134361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163431241 - 2⁵ = 163431209 is a prime.

It is not a weakly prime, because it can be changed into another prime (163435241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81715620 + 81715621.

It is an arithmetic number, because the mean of its divisors is an integer number (81715621).

Almost surely, 2^163431241 is an apocalyptic number.

It is an amenable number.

163431241 is a deficient number, since it is larger than the sum of its proper divisors (1).

163431241 is an equidigital number, since it uses as much as digits as its factorization.

163431241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 163431241 is about 12784.0228801422. The cubic root of 163431241 is about 546.7368666459.

The spelling of 163431241 in words is "one hundred sixty-three million, four hundred thirty-one thousand, two hundred forty-one".