165141320 has 16 divisors (see below), whose sum is σ = 371568060. Its totient is φ = 66056512.

The previous prime is 165141299. The next prime is 165141337. The reversal of 165141320 is 23141561.

165141320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 141657604 + 23483716 = 11902^2 + 4846^2 .

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, 2064227 + ... + 2064306.

Almost surely, 2^165141320 is an apocalyptic number.

165141320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165141320 is an abundant number, since it is smaller than the sum of its proper divisors (206426740).

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

165141320 is a wasteful number, since it uses less digits than its factorization.

165141320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128544 (or 4128540 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 165141320 is about 12850.7322748550. The cubic root of 165141320 is about 548.6371990163.

Adding to 165141320 its reverse (23141561), we get a palindrome (188282881).

The spelling of 165141320 in words is "one hundred sixty-five million, one hundred forty-one thousand, three hundred twenty".