165112331 has 8 divisors (see below), whose sum is σ = 175543200. Its totient is φ = 154952512.

The previous prime is 165112307. The next prime is 165112351. The reversal of 165112331 is 133211561.

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 165112331 - 2²⁶ = 98003467 is a prime.

It is a super-2 number, since 2×165112331² = 54524163696507122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165112297 and 165112306.

It is not an unprimeable number, because it can be changed into a prime (165112351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66506 + ... + 68943.

It is an arithmetic number, because the mean of its divisors is an integer number (21942900).

Almost surely, 2^165112331 is an apocalyptic number.

165112331 is a deficient number, since it is larger than the sum of its proper divisors (10430869).

165112331 is a wasteful number, since it uses less digits than its factorization.

165112331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135525.

The product of its digits is 540, while the sum is 23.

The square root of 165112331 is about 12849.6043129740. The cubic root of 165112331 is about 548.6050944437.

Adding to 165112331 its reverse (133211561), we get a palindrome (298323892).

The spelling of 165112331 in words is "one hundred sixty-five million, one hundred twelve thousand, three hundred thirty-one".