163243 has 2 divisors, whose sum is σ = 163244. Its totient is φ = 163242.

The previous prime is 163223. The next prime is 163249. The reversal of 163243 is 342361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163243 - 2⁵ = 163211 is a prime.

163243 is a lucky number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 163243.

It is not a weakly prime, because it can be changed into another prime (163249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81621 + 81622.

It is an arithmetic number, because the mean of its divisors is an integer number (81622).

2¹⁶³²⁴³ is an apocalyptic number.

163243 is a deficient number, since it is larger than the sum of its proper divisors (1).

163243 is an equidigital number, since it uses as much as digits as its factorization.

163243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 19.

The square root of 163243 is about 404.0334144597. The cubic root of 163243 is about 54.6526874494.

It can be divided in two parts, 163 and 243, that added together give a triangular number (406 = T₂₈).

The spelling of 163243 in words is "one hundred sixty-three thousand, two hundred forty-three".