2163123 has 6 divisors (see below), whose sum is σ = 3124524. Its totient is φ = 1442076.

The previous prime is 2163113. The next prime is 2163137. The reversal of 2163123 is 3213612.

It is not a de Polignac number, because 2163123 - 2⁴ = 2163107 is a prime.

It is a super-2 number, since 2×2163123² = 9358202226258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2163096 and 2163105.

It is not an unprimeable number, because it can be changed into a prime (2163113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120165 + ... + 120182.

It is an arithmetic number, because the mean of its divisors is an integer number (520754).

2^2163123 is an apocalyptic number.

2163123 is a deficient number, since it is larger than the sum of its proper divisors (961401).

2163123 is a wasteful number, since it uses less digits than its factorization.

2163123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240353 (or 240350 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 2163123 is about 1470.7559280860. The cubic root of 2163123 is about 129.3283504711.

Adding to 2163123 its reverse (3213612), we get a palindrome (5376735).

The spelling of 2163123 in words is "two million, one hundred sixty-three thousand, one hundred twenty-three".