165144311 has 2 divisors, whose sum is σ = 165144312. Its totient is φ = 165144310.

The previous prime is 165144281. The next prime is 165144313. The reversal of 165144311 is 113441561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165144311 - 2⁶ = 165144247 is a prime.

Together with 165144313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165144313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82572155 + 82572156.

It is an arithmetic number, because the mean of its divisors is an integer number (82572156).

Almost surely, 2^165144311 is an apocalyptic number.

165144311 is a deficient number, since it is larger than the sum of its proper divisors (1).

165144311 is an equidigital number, since it uses as much as digits as its factorization.

165144311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 165144311 is about 12850.8486490193. The cubic root of 165144311 is about 548.6405112581.

Adding to 165144311 its reverse (113441561), we get a palindrome (278585872).

The spelling of 165144311 in words is "one hundred sixty-five million, one hundred forty-four thousand, three hundred eleven".