165316371 has 24 divisors (see below), whose sum is σ = 243326160. Its totient is φ = 99760320.

The previous prime is 165316363. The next prime is 165316373. The reversal of 165316371 is 173613561.

It is a happy number.

165316371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165316371 - 2³ = 165316363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (165316373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96801 + ... + 98493.

It is an arithmetic number, because the mean of its divisors is an integer number (10138590).

Almost surely, 2^165316371 is an apocalyptic number.

165316371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

165316371 is a deficient number, since it is larger than the sum of its proper divisors (78009789).

165316371 is a wasteful number, since it uses less digits than its factorization.

165316371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1976 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 165316371 is about 12857.5414057276. The cubic root of 165316371 is about 548.8309837014.

The spelling of 165316371 in words is "one hundred sixty-five million, three hundred sixteen thousand, three hundred seventy-one".