163256111 has 2 divisors, whose sum is σ = 163256112. Its totient is φ = 163256110.

The previous prime is 163256089. The next prime is 163256123. The reversal of 163256111 is 111652361.

It is a strong prime.

It is an emirp because it is prime and its reverse (111652361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163256111 - 2¹⁸ = 162993967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163256131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81628055 + 81628056.

It is an arithmetic number, because the mean of its divisors is an integer number (81628056).

Almost surely, 2^163256111 is an apocalyptic number.

163256111 is a deficient number, since it is larger than the sum of its proper divisors (1).

163256111 is an equidigital number, since it uses as much as digits as its factorization.

163256111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 163256111 is about 12777.1714788524. The cubic root of 163256111 is about 546.5415056925.

The spelling of 163256111 in words is "one hundred sixty-three million, two hundred fifty-six thousand, one hundred eleven".