165935231 has 8 divisors (see below), whose sum is σ = 206880384. Its totient is φ = 129300120.

The previous prime is 165935221. The next prime is 165935233. The reversal of 165935231 is 132539561.

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

It is a cyclic number.

It is not a de Polignac number, because 165935231 - 2¹⁴ = 165918847 is a prime.

It is a super-2 number, since 2×165935231² = 55069001774046722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165935191 and 165935200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165935233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077425 + ... + 1077578.

It is an arithmetic number, because the mean of its divisors is an integer number (25860048).

Almost surely, 2^165935231 is an apocalyptic number.

165935231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

165935231 is a deficient number, since it is larger than the sum of its proper divisors (40945153).

165935231 is a wasteful number, since it uses less digits than its factorization.

165935231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155021.

The product of its digits is 24300, while the sum is 35.

The square root of 165935231 is about 12881.5849568289. The cubic root of 165935231 is about 549.5149784665.

The spelling of 165935231 in words is "one hundred sixty-five million, nine hundred thirty-five thousand, two hundred thirty-one".