165131326 has 8 divisors (see below), whose sum is σ = 247826664. Its totient is φ = 82522440.

The previous prime is 165131311. The next prime is 165131341. The reversal of 165131326 is 623131561.

It is an interprime number because it is at equal distance from previous prime (165131311) and next prime (165131341).

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

It is a junction number, because it is equal to n+sod(n) for n = 165131294 and 165131303.

It is a congruent number.

It is an unprimeable number.

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, 16605 + ... + 24616.

It is an arithmetic number, because the mean of its divisors is an integer number (30978333).

Almost surely, 2^165131326 is an apocalyptic number.

165131326 is a deficient number, since it is larger than the sum of its proper divisors (82695338).

165131326 is a wasteful number, since it uses less digits than its factorization.

165131326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43226.

The product of its digits is 3240, while the sum is 28.

The square root of 165131326 is about 12850.3434195355. The cubic root of 165131326 is about 548.6261313425.

Adding to 165131326 its reverse (623131561), we get a palindrome (788262887).

The spelling of 165131326 in words is "one hundred sixty-five million, one hundred thirty-one thousand, three hundred twenty-six".