161318 has 8 divisors (see below), whose sum is σ = 245280. Its totient is φ = 79560.

The previous prime is 161309. The next prime is 161323. The reversal of 161318 is 813161.

161318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 161318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353 + ... + 668.

It is an arithmetic number, because the mean of its divisors is an integer number (30660).

2¹⁶¹³¹⁸ is an apocalyptic number.

161318 is a deficient number, since it is larger than the sum of its proper divisors (83962).

161318 is a wasteful number, since it uses less digits than its factorization.

161318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102.

The product of its digits is 144, while the sum is 20.

The square root of 161318 is about 401.6441210823. The cubic root of 161318 is about 54.4370116498.

Adding to 161318 its reverse (813161), we get a palindrome (974479).

The spelling of 161318 in words is "one hundred sixty-one thousand, three hundred eighteen".