165312106 has 4 divisors (see below), whose sum is σ = 247968162. Its totient is φ = 82656052.

The previous prime is 165312101. The next prime is 165312137. The reversal of 165312106 is 601213561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 158986881 + 6325225 = 12609^2 + 2515^2 .

It is not an unprimeable number, because it can be changed into a prime (165312101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41328025 + ... + 41328028.

Almost surely, 2^165312106 is an apocalyptic number.

165312106 is a deficient number, since it is larger than the sum of its proper divisors (82656056).

165312106 is an equidigital number, since it uses as much as digits as its factorization.

165312106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82656055.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 165312106 is about 12857.3755486880. The cubic root of 165312106 is about 548.8262638941.

Adding to 165312106 its reverse (601213561), we get a palindrome (766525667).

The spelling of 165312106 in words is "one hundred sixty-five million, three hundred twelve thousand, one hundred six".