338523161 has 4 divisors (see below), whose sum is σ = 338568912. Its totient is φ = 338477412.

The previous prime is 338523139. The next prime is 338523167. The reversal of 338523161 is 161325833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161325833 = 151 ⋅1068383.

It is a cyclic number.

It is not a de Polignac number, because 338523161 - 2¹⁰ = 338522137 is a prime.

It is a super-2 number, since 2×338523161² = 229195861066863842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338523167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8951 + ... + 27516.

It is an arithmetic number, because the mean of its divisors is an integer number (84642228).

Almost surely, 2^338523161 is an apocalyptic number.

It is an amenable number.

338523161 is a deficient number, since it is larger than the sum of its proper divisors (45751).

338523161 is an equidigital number, since it uses as much as digits as its factorization.

338523161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45750.

The product of its digits is 12960, while the sum is 32.

The square root of 338523161 is about 18398.9989129844. The cubic root of 338523161 is about 696.9411845443.

Adding to 338523161 its reverse (161325833), we get a palindrome (499848994).

The spelling of 338523161 in words is "three hundred thirty-eight million, five hundred twenty-three thousand, one hundred sixty-one".