2165003123 has 2 divisors, whose sum is σ = 2165003124. Its totient is φ = 2165003122.

The previous prime is 2165003117. The next prime is 2165003129. The reversal of 2165003123 is 3213005612.

It is a balanced prime because it is at equal distance from previous prime (2165003117) and next prime (2165003129).

It is a cyclic number.

It is not a de Polignac number, because 2165003123 - 2⁴ = 2165003107 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165003129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082501561 + 1082501562.

It is an arithmetic number, because the mean of its divisors is an integer number (1082501562).

Almost surely, 2^2165003123 is an apocalyptic number.

2165003123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165003123 is an equidigital number, since it uses as much as digits as its factorization.

2165003123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2165003123 is about 46529.5940558264. The cubic root of 2165003123 is about 1293.6580908889.

Adding to 2165003123 its reverse (3213005612), we get a palindrome (5378008735).

The spelling of 2165003123 in words is "two billion, one hundred sixty-five million, three thousand, one hundred twenty-three".