165268031 has 8 divisors (see below), whose sum is σ = 166458240. Its totient is φ = 164082328.

The previous prime is 165268009. The next prime is 165268073. The reversal of 165268031 is 130862561.

It is a happy number.

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 165268031 - 2⁶ = 165267967 is a prime.

It is a super-2 number, since 2×165268031² = 54627044141233922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165268001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 105230 + ... + 106788.

It is an arithmetic number, because the mean of its divisors is an integer number (20807280).

Almost surely, 2^165268031 is an apocalyptic number.

165268031 is a deficient number, since it is larger than the sum of its proper divisors (1190209).

165268031 is a wasteful number, since it uses less digits than its factorization.

165268031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 165268031 is about 12855.6614376702. The cubic root of 165268031 is about 548.7774841076. Note that the first 3 decimals are identical.

The spelling of 165268031 in words is "one hundred sixty-five million, two hundred sixty-eight thousand, thirty-one".