163242971 has 2 divisors, whose sum is σ = 163242972. Its totient is φ = 163242970.

The previous prime is 163242953. The next prime is 163242977. The reversal of 163242971 is 179242361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163242971 - 2⁶ = 163242907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (163242977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81621485 + 81621486.

It is an arithmetic number, because the mean of its divisors is an integer number (81621486).

Almost surely, 2^163242971 is an apocalyptic number.

163242971 is a deficient number, since it is larger than the sum of its proper divisors (1).

163242971 is an equidigital number, since it uses as much as digits as its factorization.

163242971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 163242971 is about 12776.6572701940. The cubic root of 163242971 is about 546.5268421310.

The spelling of 163242971 in words is "one hundred sixty-three million, two hundred forty-two thousand, nine hundred seventy-one".