165311424 has 42 divisors (see below), whose sum is σ = 473837000. Its totient is φ = 55103616.

The previous prime is 165311411. The next prime is 165311459. The reversal of 165311424 is 424113561.

It is a happy number.

165311424 is a `hidden beast` number, since 1 + 653 + 1 + 1 + 4 + 2 + 4 = 666.

165311424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142924 + ... + 144075.

Almost surely, 2^165311424 is an apocalyptic number.

It is an amenable number.

165311424 is an abundant number, since it is smaller than the sum of its proper divisors (308525576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165311424 is a wasteful number, since it uses less digits than its factorization.

165311424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287017 (or 287004 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 165311424 is about 12857.3490269184. The cubic root of 165311424 is about 548.8255091600.

Adding to 165311424 its reverse (424113561), we get a palindrome (589424985).

It can be divided in two parts, 16531 and 1424, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 165311424 in words is "one hundred sixty-five million, three hundred eleven thousand, four hundred twenty-four".