163343261 has 4 divisors (see below), whose sum is σ = 163403292. Its totient is φ = 163283232.

The previous prime is 163343237. The next prime is 163343287. The reversal of 163343261 is 162343361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138532900 + 24810361 = 11770^2 + 4981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163343261 is a prime.

It is a super-2 number, since 2×163343261² = 53362041828228242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163343291) 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 in 3 ways as a sum of consecutive naturals, for example, 25730 + ... + 31443.

It is an arithmetic number, because the mean of its divisors is an integer number (40850823).

Almost surely, 2^163343261 is an apocalyptic number.

It is an amenable number.

163343261 is a deficient number, since it is larger than the sum of its proper divisors (60031).

163343261 is an equidigital number, since it uses as much as digits as its factorization.

163343261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60030.

The product of its digits is 7776, while the sum is 29.

The square root of 163343261 is about 12780.5814030505. The cubic root of 163343261 is about 546.6387406830.

The spelling of 163343261 in words is "one hundred sixty-three million, three hundred forty-three thousand, two hundred sixty-one".