165031433 has 16 divisors (see below), whose sum is σ = 195160704. Its totient is φ = 136598400.

The previous prime is 165031423. The next prime is 165031457. The reversal of 165031433 is 334130561.

It is a cyclic number.

It is not a de Polignac number, because 165031433 - 2¹⁴ = 165015049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165031403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33158 + ... + 37808.

It is an arithmetic number, because the mean of its divisors is an integer number (12197544).

Almost surely, 2^165031433 is an apocalyptic number.

It is an amenable number.

165031433 is a deficient number, since it is larger than the sum of its proper divisors (30129271).

165031433 is a wasteful number, since it uses less digits than its factorization.

165031433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 165031433 is about 12846.4560482648. The cubic root of 165031433 is about 548.5154821074.

Adding to 165031433 its reverse (334130561), we get a palindrome (499161994).

The spelling of 165031433 in words is "one hundred sixty-five million, thirty-one thousand, four hundred thirty-three".