161338317 has 16 divisors (see below), whose sum is σ = 246067200. Its totient is φ = 92111472.

The previous prime is 161338301. The next prime is 161338319. The reversal of 161338317 is 713833161.

It is not a de Polignac number, because 161338317 - 2⁴ = 161338301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161338319) 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 15 ways as a sum of consecutive naturals, for example, 27184 + ... + 32582.

It is an arithmetic number, because the mean of its divisors is an integer number (15379200).

Almost surely, 2^161338317 is an apocalyptic number.

It is an amenable number.

161338317 is a deficient number, since it is larger than the sum of its proper divisors (84728883).

161338317 is a wasteful number, since it uses less digits than its factorization.

161338317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6832.

The product of its digits is 9072, while the sum is 33.

The square root of 161338317 is about 12701.9021016539. The cubic root of 161338317 is about 544.3929688834.

The spelling of 161338317 in words is "one hundred sixty-one million, three hundred thirty-eight thousand, three hundred seventeen".